Subjects -> MATHEMATICS (Total: 1013 journals)
    - APPLIED MATHEMATICS (92 journals)
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    - MATHEMATICS (714 journals)
    - MATHEMATICS (GENERAL) (45 journals)
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    - PROBABILITIES AND MATH STATISTICS (113 journals)

MATHEMATICS (714 journals)                  1 2 3 4 | Last

Showing 1 - 200 of 538 Journals sorted alphabetically
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 2)
Accounting Perspectives     Full-text available via subscription   (Followers: 4)
ACM Transactions on Algorithms (TALG)     Hybrid Journal   (Followers: 14)
ACM Transactions on Mathematical Software (TOMS)     Hybrid Journal   (Followers: 6)
ACS Applied Materials & Interfaces     Hybrid Journal   (Followers: 49)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 2)
Acta Mathematica Hungarica     Hybrid Journal   (Followers: 4)
Acta Mathematica Sinica, English Series     Hybrid Journal   (Followers: 5)
Acta Mathematica Vietnamica     Hybrid Journal  
Acta Mathematicae Applicatae Sinica, English Series     Hybrid Journal  
Advanced Science Letters     Full-text available via subscription   (Followers: 10)
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 6)
Advances in Catalysis     Full-text available via subscription   (Followers: 7)
Advances in Complex Systems     Hybrid Journal   (Followers: 10)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 21)
Advances in Difference Equations     Open Access   (Followers: 4)
Advances in Geosciences (ADGEO)     Open Access   (Followers: 20)
Advances in Linear Algebra & Matrix Theory     Open Access   (Followers: 6)
Advances in Materials Science     Open Access   (Followers: 24)
Advances in Mathematical Physics     Open Access   (Followers: 7)
Advances in Mathematics     Full-text available via subscription   (Followers: 21)
Advances in Numerical Analysis     Open Access   (Followers: 5)
Advances in Operations Research     Open Access   (Followers: 13)
Advances in Operator Theory     Hybrid Journal  
Advances in Pure Mathematics     Open Access   (Followers: 11)
Advances in Science and Research (ASR)     Open Access   (Followers: 9)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2)
African Journal of Educational Studies in Mathematics and Sciences     Full-text available via subscription   (Followers: 10)
African Journal of Mathematics and Computer Science Research     Open Access   (Followers: 8)
Afrika Matematika     Hybrid Journal   (Followers: 2)
Air, Soil & Water Research     Open Access   (Followers: 9)
Al-Qadisiyah Journal for Computer Science and Mathematics     Open Access   (Followers: 5)
AL-Rafidain Journal of Computer Sciences and Mathematics     Open Access   (Followers: 4)
Algebra and Logic     Hybrid Journal   (Followers: 10)
Algebra Colloquium     Hybrid Journal   (Followers: 3)
Algebra Universalis     Hybrid Journal   (Followers: 3)
Algorithmic Operations Research     Open Access   (Followers: 7)
Algorithms     Open Access   (Followers: 15)
Algorithms Research     Open Access   (Followers: 1)
American Journal of Computational and Applied Mathematics     Open Access   (Followers: 4)
American Journal of Mathematical and Management Sciences     Hybrid Journal  
American Journal of Mathematics     Full-text available via subscription   (Followers: 9)
American Journal of Operations Research     Open Access   (Followers: 7)
American Mathematical Monthly     Full-text available via subscription   (Followers: 5)
An International Journal of Optimization and Control: Theories & Applications     Open Access   (Followers: 12)
Analele Universitatii Ovidius Constanta - Seria Matematica     Open Access  
Analysis and Applications     Hybrid Journal   (Followers: 2)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 7)
Annales Mathematicae Silesianae     Open Access  
Annales mathématiques du Québec     Hybrid Journal   (Followers: 3)
Annales Universitatis Mariae Curie-Sklodowska, sectio A – Mathematica     Open Access   (Followers: 1)
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica     Open Access  
Annali di Matematica Pura ed Applicata     Hybrid Journal   (Followers: 1)
Annals of Combinatorics     Hybrid Journal   (Followers: 4)
Annals of Data Science     Hybrid Journal   (Followers: 15)
Annals of Functional Analysis     Hybrid Journal   (Followers: 2)
Annals of Mathematics     Full-text available via subscription   (Followers: 8)
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 13)
Annals of PDE     Hybrid Journal   (Followers: 1)
Annals of Pure and Applied Logic     Open Access   (Followers: 5)
Annals of the Institute of Statistical Mathematics     Hybrid Journal   (Followers: 1)
Annals of West University of Timisoara - Mathematics     Open Access   (Followers: 1)
Annals of West University of Timisoara - Mathematics and Computer Science     Open Access   (Followers: 2)
Annuaire du Collège de France     Open Access   (Followers: 6)
ANZIAM Journal     Open Access   (Followers: 1)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 3)
Applications of Mathematics     Hybrid Journal   (Followers: 4)
Applied Categorical Structures     Hybrid Journal   (Followers: 5)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 16)
Applied Mathematics     Open Access   (Followers: 6)
Applied Mathematics     Open Access   (Followers: 5)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 7)
Applied Mathematics - A Journal of Chinese Universities     Hybrid Journal   (Followers: 1)
Applied Mathematics and Nonlinear Sciences     Open Access   (Followers: 2)
Applied Mathematics Letters     Full-text available via subscription   (Followers: 4)
Applied Mathematics Research eXpress     Hybrid Journal   (Followers: 1)
Applied Network Science     Open Access   (Followers: 3)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 4)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 5)
Arab Journal of Mathematical Sciences     Open Access   (Followers: 3)
Arabian Journal of Mathematics     Open Access   (Followers: 1)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 3)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 4)
Archive of Numerical Software     Open Access  
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 5)
Arnold Mathematical Journal     Hybrid Journal   (Followers: 2)
Artificial Satellites     Open Access   (Followers: 22)
Asia-Pacific Journal of Operational Research     Hybrid Journal   (Followers: 4)
Asian Journal of Algebra     Open Access   (Followers: 1)
Asian Research Journal of Mathematics     Open Access  
Asian-European Journal of Mathematics     Hybrid Journal   (Followers: 2)
Australian Mathematics Teacher, The     Full-text available via subscription   (Followers: 7)
Australian Primary Mathematics Classroom     Full-text available via subscription   (Followers: 5)
Australian Senior Mathematics Journal     Full-text available via subscription   (Followers: 1)
Automatic Documentation and Mathematical Linguistics     Hybrid Journal   (Followers: 4)
Axioms     Open Access   (Followers: 1)
Banach Journal of Mathematical Analysis     Hybrid Journal  
Basin Research     Hybrid Journal   (Followers: 6)
Biomath     Open Access  
BIT Numerical Mathematics     Hybrid Journal  
Boletim Cearense de Educação e História da Matemática     Open Access  
Boletín de la Sociedad Matemática Mexicana     Hybrid Journal  
Bollettino dell'Unione Matematica Italiana     Full-text available via subscription  
British Journal for the History of Mathematics     Hybrid Journal   (Followers: 3)
Bulletin des Sciences Mathamatiques     Full-text available via subscription   (Followers: 3)
Bulletin of Dnipropetrovsk University. Series : Communications in Mathematical Modeling and Differential Equations Theory     Open Access   (Followers: 3)
Bulletin of Mathematical Sciences     Open Access   (Followers: 2)
Bulletin of Symbolic Logic     Full-text available via subscription   (Followers: 4)
Bulletin of the Australian Mathematical Society     Full-text available via subscription   (Followers: 2)
Bulletin of the Brazilian Mathematical Society, New Series     Hybrid Journal  
Bulletin of the Iranian Mathematical Society     Hybrid Journal  
Bulletin of the London Mathematical Society     Hybrid Journal   (Followers: 3)
Bulletin of the Malaysian Mathematical Sciences Society     Hybrid Journal  
Calculus of Variations and Partial Differential Equations     Hybrid Journal   (Followers: 2)
Canadian Journal of Mathematics / Journal canadien de mathématiques     Hybrid Journal  
Canadian Journal of Science, Mathematics and Technology Education     Hybrid Journal   (Followers: 20)
Canadian Mathematical Bulletin     Hybrid Journal  
Carpathian Mathematical Publications     Open Access  
Catalysis in Industry     Hybrid Journal  
CAUCHY     Open Access   (Followers: 1)
CEAS Space Journal     Hybrid Journal   (Followers: 5)
CHANCE     Hybrid Journal   (Followers: 5)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 2)
Chaos, Solitons & Fractals : X     Open Access   (Followers: 1)
ChemSusChem     Hybrid Journal   (Followers: 8)
Chinese Annals of Mathematics, Series B     Hybrid Journal  
Chinese Journal of Catalysis     Full-text available via subscription   (Followers: 2)
Chinese Journal of Mathematics     Open Access  
Ciencia     Open Access  
CODEE Journal     Open Access  
Cogent Mathematics     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 3)
Collectanea Mathematica     Hybrid Journal  
College Mathematics Journal     Hybrid Journal   (Followers: 3)
COMBINATORICA     Hybrid Journal  
Combinatorics, Probability and Computing     Hybrid Journal   (Followers: 5)
Combustion Theory and Modelling     Hybrid Journal   (Followers: 21)
Commentarii Mathematici Helvetici     Hybrid Journal   (Followers: 1)
Communications in Combinatorics and Optimization     Open Access  
Communications in Contemporary Mathematics     Hybrid Journal  
Communications in Mathematical Physics     Hybrid Journal   (Followers: 4)
Communications On Pure & Applied Mathematics     Hybrid Journal   (Followers: 7)
Complex Analysis and its Synergies     Open Access   (Followers: 1)
Complex Variables and Elliptic Equations: An International Journal     Hybrid Journal  
Compositio Mathematica     Full-text available via subscription   (Followers: 2)
Comptes Rendus : Mathematique     Open Access  
Computational and Applied Mathematics     Hybrid Journal   (Followers: 4)
Computational and Mathematical Methods     Hybrid Journal  
Computational and Mathematical Methods in Medicine     Open Access   (Followers: 2)
Computational and Mathematical Organization Theory     Hybrid Journal   (Followers: 2)
Computational Complexity     Hybrid Journal   (Followers: 5)
Computational Mathematics and Modeling     Hybrid Journal   (Followers: 8)
Computational Mechanics     Hybrid Journal   (Followers: 14)
Computational Methods and Function Theory     Hybrid Journal  
Computational Optimization and Applications     Hybrid Journal   (Followers: 10)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 11)
Confluentes Mathematici     Hybrid Journal  
Constructive Mathematical Analysis     Open Access   (Followers: 1)
Contributions to Game Theory and Management     Open Access   (Followers: 1)
COSMOS     Hybrid Journal   (Followers: 1)
Cross Section     Full-text available via subscription   (Followers: 1)
Cryptography and Communications     Hybrid Journal   (Followers: 12)
Cuadernos de Investigación y Formación en Educación Matemática     Open Access  
Cubo. A Mathematical Journal     Open Access  
Current Research in Biostatistics     Open Access   (Followers: 9)
Czechoslovak Mathematical Journal     Hybrid Journal  
Demographic Research     Open Access   (Followers: 15)
Design Journal : An International Journal for All Aspects of Design     Hybrid Journal   (Followers: 39)
Dhaka University Journal of Science     Open Access  
Differential Equations and Dynamical Systems     Hybrid Journal   (Followers: 4)
Digital Experiences in Mathematics Education     Hybrid Journal   (Followers: 3)
Discrete Mathematics     Hybrid Journal   (Followers: 7)
Discrete Mathematics & Theoretical Computer Science     Open Access   (Followers: 1)
Discrete Mathematics, Algorithms and Applications     Hybrid Journal   (Followers: 3)
Doklady Mathematics     Hybrid Journal  
Eco Matemático     Open Access  
Econometrics     Open Access   (Followers: 2)
Educação Matemática Debate     Open Access  
Emergent Scientist     Open Access  
Energy for Sustainable Development     Hybrid Journal   (Followers: 14)
Enseñanza de las Ciencias : Revista de Investigación y Experiencias Didácticas     Open Access  
Entropy     Open Access   (Followers: 5)
ESAIM: Control Optimisation and Calculus of Variations     Open Access   (Followers: 3)
European Journal of Applied Mathematics     Hybrid Journal  
European Journal of Combinatorics     Full-text available via subscription   (Followers: 3)
European Journal of Mathematics     Hybrid Journal   (Followers: 1)
European Scientific Journal     Open Access   (Followers: 11)
Examples and Counterexamples     Open Access   (Followers: 5)
Experimental Mathematics     Hybrid Journal   (Followers: 5)
Expositiones Mathematicae     Hybrid Journal   (Followers: 2)
Facta Universitatis, Series : Mathematics and Informatics     Open Access  
Finite Fields and Their Applications     Full-text available via subscription   (Followers: 6)
Formalized Mathematics     Open Access  
Forum of Mathematics, Pi     Open Access   (Followers: 1)
Forum of Mathematics, Sigma     Open Access   (Followers: 1)
Foundations and Trends® in Econometrics     Full-text available via subscription   (Followers: 6)
Foundations and Trends® in Networking     Full-text available via subscription   (Followers: 1)
Foundations and Trends® in Stochastic Systems     Full-text available via subscription   (Followers: 1)
Foundations and Trends® in Theoretical Computer Science     Full-text available via subscription   (Followers: 1)
Foundations of Computational Mathematics     Hybrid Journal   (Followers: 1)

        1 2 3 4 | Last

Similar Journals
Journal Cover
Communications in Contemporary Mathematics
Journal Prestige (SJR): 1.668
Citation Impact (citeScore): 1
Number of Followers: 0  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 0219-1997 - ISSN (Online) 1793-6683
Published by World Scientific Homepage  [121 journals]
  • On the Dirichlet problem for fractional Laplace equation on a general
           domain

    • Free pre-print version: Loading...

      Authors: Chenkai Liu, Ran Zhuo
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      In this paper, we study the weak strong uniqueness of the Dirichlet type problems of fractional Laplace (Poisson) equations. We construct the Green’s function and the Poisson kernel. We then provide a somewhat sharp condition for the solution to be unique. We also show that the solution under such condition exists and must be given by our Green’s function and Poisson kernel. In doing these, we establish several basic and useful properties of the Green’s function and Poisson kernel. Based on these, we obtain some further a priori estimates of the solutions. Surprisingly those estimates are quite different from the ones for the local type elliptic equations such as Laplace equations. These are basic properties to the fractional Laplace equations and can be useful in the study of related problems.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-08-06T07:00:00Z
      DOI: 10.1142/S0219199724500378
       
  • A new invariant on [math]-dimensional manifolds and applications

    • Free pre-print version: Loading...

      Authors: Yuxin Ge, Mingxiang Li, Zhao Lian
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      In this work, we study a functional involving the generalized scalar curvatures and prove a spherical sphere theorem under some pinching condition of this quantity. As an application, we define a new invariant on [math]-dimensional manifolds and use it to study the topology of manifolds.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-07-27T07:00:00Z
      DOI: 10.1142/S0219199724500366
       
  • A Bakry–Émery criterion for weighted contractivity and
           [math]-Hardy inequalities

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      Authors: Yaozhong Qiu
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      We show a symmetric Markov diffusion semigroup satisfies a weighted contractivity condition if and only if a [math]-Hardy inequality holds, and we give a Bakry–Émery-type criterion for the former. We then give some applications.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-07-09T07:00:00Z
      DOI: 10.1142/S0219199724500238
       
  • On Borel subalgebras of quantum groups

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      Authors: Simon Lentner, Karolina Vocke
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      For a quantum group, we study those right coideal subalgebras, for which all irreducible representations are one-dimensional. If a right coideal subalgebra is maximal with this property, then we call it a Borel subalgebra. Besides the positive part of the quantum group and its reflections, we find new unfamiliar Borel subalgebras, for example, ones containing copies of the quantum Weyl algebra. Given a Borel subalgebra, we study its induced (Verma-)modules and prove among others that they have all irreducible finite-dimensional modules as quotients. We give two structural conjectures involving the associated graded right coideal subalgebra, which we prove in certain cases. In particular, they predict the shape of all triangular Borel subalgebras. As examples, we determine all Borel subalgebras of [math] and [math] and discuss the induced modules.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-07-06T07:00:00Z
      DOI: 10.1142/S0219199724500287
       
  • Moduli spaces of [math]-constellations over [math]

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      Authors: Michele Graffeo
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      Let [math] be a representation of a finite abelian group and let [math] be the space of generic stability conditions on the set of [math]-constellations. We provide a combinatorial description of all the chambers [math] and prove that there are [math] of them. Moreover, we introduce the notion of simple chamber and we show that, in order to know all toric [math]-constellations, it is enough to build all simple chambers. We also prove that there are [math] simple chambers. Finally, we provide an explicit formula for the tautological bundles [math] over the moduli spaces [math] for all chambers [math] which only depends upon the chamber stair which is a combinatorial object attached to the chamber [math].
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-06-26T07:00:00Z
      DOI: 10.1142/S0219199724500196
       
  • On some isoperimetric inequalities for the Newtonian capacity

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      Authors: M. van den Berg
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      Upper bounds are obtained for the Newtonian capacity of compact sets in [math] in terms of the perimeter of the [math]-parallel neighborhood of [math]. For compact, convex sets in [math] with a [math] boundary the Newtonian capacity is bounded from above by [math], where [math] is the integral of the mean curvature over the boundary of [math] with equality if [math] is a ball. For compact, convex sets in [math] with non-empty interior the Newtonian capacity is bounded from above by [math] with equality if [math] is a ball. Here, [math] is the perimeter of [math] and [math] is its measure. A quantitative refinement of the latter inequality in terms of the Fraenkel asymmetry is also obtained. An upper bound is obtained for expected Newtonian capacity of the Wiener sausage in [math] with radius [math] and time length [math].
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-06-19T07:00:00Z
      DOI: 10.1142/S0219199724500275
       
  • Riemannian distance and symplectic embeddings in cotangent bundle

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      Authors: Filip Broćić
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      Given an open neighborhood [math] of the zero section in the cotangent bundle of [math] we define a distance-like function [math] on [math] using certain symplectic embeddings from the standard ball [math] to [math]. We show that when [math] is the unit-disk cotangent bundle of a Riemannian metric on [math], [math] recovers the metric. As an intermediate step, we give a new construction of a symplectic embedding of the ball of capacity 4 to the product of Lagrangian disks [math], and we give a new proof of the strong Viterbo conjecture about normalized capacities for [math]. We also give bounds of the symplectic packing number of two balls in a unit-disk cotangent bundle relative to the zero section [math].
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-06-13T07:00:00Z
      DOI: 10.1142/S021919972450024X
       
  • Blow-up analysis of stationary solutions to a Liouville-type equation in
           3D

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      Authors: Francesca Da Lio, Ali Hyder
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      In this paper, we study the asymptotic behavior of sequences of stationary weak solutions to the following Liouville-type equation: −Δu = euinΩ,(1) where [math] is an open set. By improving the partial regularity estimates obtained by the first author in F. Da Lio [Partial regularity for stationary solutions to Liouville-type equation in dimension 3, Comm. Partial Differential Equations 33(10–12) (2008) 1890–1910] for Eq.  () we succeed in performing a blow-up analysis without Morrey-type assumptions on the solutions [math] and on the nonlinearity [math]
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-06-06T07:00:00Z
      DOI: 10.1142/S0219199724500202
       
  • On the uniqueness of variable coefficient Schrödinger equations

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      Authors: Serena Federico, Zongyuan Li, Xueying Yu
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      In this paper, we prove unique continuation properties for linear variable coefficient Schrödinger equations with bounded real potentials. Under certain smallness conditions on the leading coefficients, we prove that solutions decaying faster than any cubic exponential rate at two different times must be identically zero. Assuming a transversally anisotropic type condition, we recover the sharp Gaussian (quadratic exponential) rate in the series of works by Escauriaza–Kenig–Ponce–Vega [On uniqueness properties of solutions of Schrödinger equations, Comm. Partial Differential Equations 31(10–12) (2006) 1811–1823; Hardy’s uncertainty principle, convexity and Schrödinger evolutions, J. Eur. Math. Soc. (JEMS) 10(4) (2008) 883–907; The sharp Hardy uncertainty principle for Schrödinger evolutions, Duke Math. J. 155(1) (2010) 163–187].
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-05-29T07:00:00Z
      DOI: 10.1142/S0219199724500160
       
  • Maximal directional derivatives in Laakso space

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      Authors: Marco Capolli, Andrea Pinamonti, Gareth Speight
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      We investigate the connection between maximal directional derivatives and differentiability for Lipschitz functions defined on Laakso space. We show that maximality of a directional derivative for a Lipschitz function implies differentiability only for a [math]-porous set of points. On the other hand, the distance to a fixed point is differentiable everywhere except for a [math]-porous set of points. This behavior is completely different to the previously studied settings of Euclidean spaces, Carnot groups and Banach spaces. Hence, the techniques used in these spaces do not generalize to metric measure spaces.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-05-15T07:00:00Z
      DOI: 10.1142/S0219199724500172
       
  • Smooth modules over the [math] Bondi–Metzner–Sachs
           superalgebra

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      Authors: Dong Liu, Yufeng Pei, Limeng Xia, Kaiming Zhao
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      In this paper, we present a determinant formula for a contravariant form on Verma modules over the [math] Bondi–Metzner–Sachs (BMS) superalgebra. This formula establishes a necessary and sufficient condition for the irreducibility of the Verma modules. We then introduce and characterize a class of simple smooth modules that generalize both Verma and Whittaker modules over the [math] BMS superalgebra. We also utilize the Heisenberg–Clifford vertex superalgebra to construct a free field realization for the [math] BMS superalgebra. This free field realization allows us to obtain a family of natural smooth modules over the [math] BMS superalgebra, which includes Fock modules and certain Whittaker modules.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-05-10T07:00:00Z
      DOI: 10.1142/S0219199724500214
       
  • Pseudoconvex submanifolds in Kähler 4-manifolds

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      Authors: Brian Weber
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      This paper shows how a Levi-flat or pseudoconvex submanifold in a Kähler 4-manifold restricts the ambient manifold’s topology and its geometry at infinity.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-05-07T07:00:00Z
      DOI: 10.1142/S0219199724500147
       
  • A characterization of the subspace of radially symmetric functions in
           Sobolev spaces

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      Authors: Matthias Ostermann
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      In this paper, we show that any Sobolev norm of nonnegative integer order of radially symmetric functions is equivalent to a weighted Sobolev norm of their radial profile. This establishes in terms of weighted Sobolev spaces on an interval a complete characterization of radial Sobolev spaces, which was open until now. As an application, we give a description of Sobolev norms of corotational maps.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-05-07T07:00:00Z
      DOI: 10.1142/S0219199724500184
       
  • A moment map for the variety of Jordan algebras

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      Authors: Claudio Gorodski, Iryna Kashuba, María Eugenia Martin
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      We study the variety of complex [math]-dimensional Jordan algebras using techniques from Geometric Invariant Theory. More specifically, we use the Kirwan–Ness theorem to construct a Morse-type stratification of the variety of Jordan algebras into finitely many invariant locally closed subsets, with respect to the energy functional associated to the canonical moment map. In particular we obtain a new, cohomology-free proof of the well-known rigidity of semisimple Jordan algebras in the context of the variety of Jordan algebras.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-05-04T07:00:00Z
      DOI: 10.1142/S0219199724500159
       
  • Global weak solvability in a self-consistent chemotaxis-Navier–Stokes
           system involving Dirichlet boundary conditions for the signal

    • Free pre-print version: Loading...

      Authors: Ying Dong, Shuai Zhang
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      The self-consistent chemotaxis-Navier–Stokes system with nonlinear diffusion ∂tn + u ⋅∇n = ∇⋅ (nm−1∇n) −∇⋅ (n∇c) + ∇⋅ (n∇ϕ), ∂tc + u ⋅∇c = Δc − nc, ∂tu + (u ⋅∇)u + ∇P = Δu − n∇ϕ + n∇c, ∇⋅u = 0 is considered in a bounded domain [math] with smooth boundary. Compared to the previously most-studied chemotaxis-fluid system proposed in [I. Tuval, L. Cisneros, C. Dombrowski, C. W. Wolgemuth, J. O. Kessler and R. E. Goldstein, Bacterial swimming and oxygen transport near contact lines, Proc. Natl. Acad. Sci. USA. 102 (2005) 2277–2282], the coupling in this system is stronger and more nonlinear. When the system is accompanied by homogeneous boundary conditions of no-flux type for [math] and [math], and of Dirichlet type for [math], a quasi-Lyapunov structure provides sufficient regularity features to facilitate a basic existence theory. However, if we change the boundary condition of the signal to c = c⋆(x,t),x ∈ ∂Ω, t> 0, with a given non-negative function [math][math], then the Dirichlet boundary condition imposed here seems to destroy the quasi-Lyapunov structure. Despite this, we shall find a new energy structure and prove that for suitably regular initial data, the assumption [math] is sufficient for the global existence and boundedness of the weak solution. To the best of our knowledge, this is the first work on the global well-posedness problem of the self-consistent chemotaxis-fluid system involving Dirichlet boundary conditions for the signal.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-05-04T07:00:00Z
      DOI: 10.1142/S0219199724500226
       
  • Pointwise convergence of the heat and subordinates of the heat semigroups
           associated with the Laplace operator on homogeneous trees and two weighted
           [math] maximal inequalities

    • Free pre-print version: Loading...

      Authors: I. Alvarez-Romero, B. Barrios, J. J. Betancor
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      In this paper, we consider the heat semigroup [math] defined by the combinatorial Laplacian and two subordinated families of [math] on homogeneous trees [math]. We characterize the weights [math] on [math] for which the pointwise convergence to initial data of the above families holds for every [math] with [math], where [math] represents the counting measure in [math]. We prove that this convergence property in [math] is equivalent to the fact that the maximal operator on [math], for some [math], defined by the semigroup is bounded from [math] into [math] for some weight [math] on [math].
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-04-18T07:00:00Z
      DOI: 10.1142/S021919972450010X
       
  • The complex hyperbolic form as a Weil–Petersson form

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      Authors: Xiangsheng Wang
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      For the moduli space of the punctured spheres, we find a new equality between two symplectic forms defined on it. Namely, by treating the elements of this moduli space as the singular Euclidean metrics on a sphere, we give an interpretation of the complex hyperbolic form, i.e. the Kähler form of the complex hyperbolic structure on the moduli space, as a kind of Weil–Petersson form.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-04-13T07:00:00Z
      DOI: 10.1142/S0219199724500068
       
  • Double Yangian and reflection algebras of the Lie superalgebra [math]

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      Authors: Lucia Bagnoli, Slaven Kožić
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      We study the double Yangian associated with the Lie superalgebra [math]. Our main focus is on establishing the Poincaré–Birkhoff–Witt Theorem for the double Yangian and constructing its central elements in the form of coefficients of the quantum contraction. Next, as an application, we introduce reflection algebras, certain left coideal subalgebras of the level 0 double Yangian, and find their presentations by generators and relations.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-04-13T07:00:00Z
      DOI: 10.1142/S021919972450007X
       
  • Subsonic flows with a contact discontinuity in a finitely long
           axisymmetric cylinder

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      Authors: Shangkun Weng, Zihao Zhang
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      This paper concerns the structural stability of subsonic flows with a contact discontinuity in a finitely long axisymmetric cylinder. We establish the existence and uniqueness of axisymmetric subsonic flows with a contact discontinuity by prescribing the horizontal mass flux distribution, the swirl velocity, the entropy and the Bernoulli’s quantity at the entrance and the radial velocity at the exit. It can be formulated as a free boundary problem with the contact discontinuity to be determined simultaneously with the flows. Compared with the two-dimensional case, a new difficulty arises due to the singularity near the axis. An invertible modified Lagrangian transformation is introduced to overcome this difficulty and straighten the contact discontinuity. The key elements in our analysis are to utilize the deformation-curl decomposition introduced in [S. Weng and Z. Xin, A deformation-curl decomposition for three dimensional steady Euler equations, Sci. Sin. Math. 49 (2019) 307–320 (in Chinese): doi:10.1360/N012018-00125] to effectively decouple the hyperbolic and elliptic modes in the steady axisymmetric Euler system and to use the implicit function theorem to locate the contact discontinuity.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-04-10T07:00:00Z
      DOI: 10.1142/S0219199724500081
       
  • Complete CMC-1 surfaces in hyperbolic space with arbitrary complex
           structure

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      Authors: Antonio Alarcón, Ildefonso Castro-Infantes, Jorge Hidalgo
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      We prove that every open Riemann surface [math] is the complex structure of a complete surface of constant mean curvature [math] ([math]) in the three-dimensional hyperbolic space [math]. We go further and establish a jet interpolation theorem for complete conformal [math] immersions [math]. As a consequence, we show the existence of complete densely immersed [math] surfaces in [math] with arbitrary complex structure. We obtain these results as application of a uniform approximation theorem with jet interpolation for holomorphic null curves in [math] which is also established in this paper.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-04-10T07:00:00Z
      DOI: 10.1142/S0219199724500111
       
  • Sharp spectral gap estimates for higher-order operators on
           Cartan–Hadamard manifolds

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      Authors: Csaba Farkas, Sándor Kajántó, Alexandru Kristály
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      The goal of this paper is to provide sharp spectral gap estimates for problems involving higher-order operators (including both the clamped and buckling plate problems) on Cartan–Hadamard manifolds. The proofs are symmetrization-free — thus no sharp isoperimetric inequality is needed — based on two general, yet elementary functional inequalities. The spectral gap estimate for clamped plates solves a sharp asymptotic problem from [Q.-M. Cheng and H. Yang, Universal inequalities for eigenvalues of a clamped plate problem on a hyperbolic space, Proc. Amer. Math. Soc. 139(2) (2011) 461–471] concerning the behavior of higher-order eigenvalues on hyperbolic spaces, and answers a question raised in [A. Kristály, Fundamental tones of clamped plates in nonpositively curved spaces, Adv. Math. 367(39) (2020) 107113] on the validity of such sharp estimates in high-dimensional Cartan–Hadamard manifolds. As a byproduct of the general functional inequalities, various Rellich inequalities are established in the same geometric setting.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-04-10T07:00:00Z
      DOI: 10.1142/S0219199724500135
       
  • Mountain pass periodic solutions for the Lorentz force equation via the
           Poincaré action functional

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      Authors: Cristian Bereanu
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      In this paper, we study the Lorentz force equation with the rest mass [math] and periodic boundary conditions on a fixed interval [math] q′ 1 − q′ 2′ = E(t,q) + q′× B(t,q),q(0) = q(T),q′(0) = q′(T), where [math] are the electric and magnetic fields. From the Poincaré paper concerning the special relativity it is well known that this is the Euler–Lagrange equation of the action functional given by ℐ∗(q) =∫0T[1 −1 − q′ 2 + q′⋅ W(t,q) − V (t,q)]dt, defined for all [math]-periodic Lipschitz functions [math] such that [math] In this paper, under some assumptions on the potentials [math] and [math] around zero and infinity, we prove that [math] has nonzero critical points which are [math]-periodic solutions of the Lorentz force equation. To prove our main results we use new “mountain pass” methods for the Poincaré action functional [math]
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-04-03T07:00:00Z
      DOI: 10.1142/S0219199724500093
       
  • Shadowing, Hyers–Ulam stability and hyperbolicity for nonautonomous
           linear delay differential equations

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      Authors: Lucas Backes, Davor Dragičević, Mihály Pituk
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      It is known that hyperbolic nonautonomous linear delay differential equations in a finite dimensional space are Hyers–Ulam stable and hence shadowable. The converse result is available only in the special case of autonomous and periodic linear delay differential equations with a simple spectrum. In this paper, we prove the converse and hence the equivalence of all three notions in the title for a general class of nonautonomous linear delay differential equations with uniformly bounded coefficients. The importance of the boundedness assumption is shown by an example.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-03-27T07:00:00Z
      DOI: 10.1142/S0219199724500123
       
  • Representations of quantum toroidal superalgebras and plane s-partitions

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      Authors: Luan Bezerra, Evgeny Mukhin
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      We construct Fock and MacMahon modules for the quantum toroidal superalgebra [math] associated with the Lie superalgebra [math] and parity [math]. The bases of the Fock and MacMahon modules are labeled by super-analogs of partitions and plane partitions with various boundary conditions, while the action of generators of [math] is given by Pieri-type formulas. We study the corresponding characters.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-03-09T08:00:00Z
      DOI: 10.1142/S0219199724500020
       
  • Compactified Jacobians of extended ADE curves and Lagrangian fibrations

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      Authors: Adam Czapliński, Andreas Krug, Manfred Lehn, Sönke Rollenske
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      We observe that general reducible curves in sufficiently positive linear systems on K3 surfaces are of a form that generalize Kodaira’s classification of singular elliptic fibers and thus call them extended ADE curves. On such a curve [math], we describe a compactified Jacobian and show that its components reflect the intersection graph of [math]. This extends known results when [math] is reduced, but new difficulties arise when [math] is non-reduced. As an application, we get an explicit description of general singular fibers of certain Lagrangian fibrations of Beauville–Mukai type.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-03-09T08:00:00Z
      DOI: 10.1142/S0219199724500044
       
  • A global Morse index theorem and applications to Jacobi fields on CMC
           surfaces

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      Authors: Wu-Hsiung Huang
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      In this paper, we establish a “global” Morse index theorem. Given a hypersurface [math] of constant mean curvature, immersed in [math]. Consider a continuous deformation of “generalized” Lipschitz domain [math] enlarging in [math]. The topological type of [math] is permitted to change along [math], so that [math] has an arbitrary shape which can “reach afar” in [math], i.e. cover any preassigned area. The proof of the global Morse index theorem is reduced to the continuity in [math] of the Sobolev space [math] of variation functions on [math], as well as the continuity of eigenvalues of the stability operator. We devise a “detour” strategy by introducing a notion of “set-continuity” of [math] in [math] to yield the required continuities of [math] and of eigenvalues. The global Morse index theorem thus follows and provides a structural theorem of the existence of Jacobi fields on domains in [math].
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-02-28T08:00:00Z
      DOI: 10.1142/S0219199723500645
       
  • Concentration phenomena for the fractional relativistic
           Schrödinger–Choquard equation

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      Authors: Vincenzo Ambrosio
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      We consider the fractional relativistic Schrödinger–Choquard equation (−Δ + m2)su + V (𝜀x)u = 1 x μ ∗ F(u) f(u)inℝN,u ∈ Hs(ℝN),u> 0inℝN, where [math] is a small parameter, [math], [math], [math], [math], [math] is the fractional relativistic Schrödinger operator, [math] is a continuous potential having a local minimum, [math] is a continuous nonlinearity with subcritical growth at infinity and [math]. Exploiting appropriate variational arguments, we construct a family of solutions concentrating around the local minimum of [math] as [math].
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-02-23T08:00:00Z
      DOI: 10.1142/S021919972350061X
       
  • Weight module classifications for Bershadsky–Polyakov algebras

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      Authors: Dražen Adamović, Kazuya Kawasetsu, David Ridout
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      The Bershadsky–Polyakov algebras are the subregular quantum Hamiltonian reductions of the affine vertex operator algebras associated with [math]. In (D. Adamović, K. Kawasetsu and D. Ridout, A realisation of the Bershadsky–Polyakov algebras and their relaxed modules, Lett. Math. Phys. 111 (2021) 38, arXiv:2007.00396 [math.QA]), we realized these algebras in terms of the regular reduction, Zamolodchikov’s W3-algebra, and an isotropic lattice vertex operator algebra. We also proved that a natural construction of relaxed highest-weight Bershadsky–Polyakov modules has the property that the result is generically irreducible. Here, we prove that this construction, when combined with spectral flow twists, gives a complete set of irreducible weight modules whose weight spaces are finite-dimensional. This gives a simple independent proof of the main classification theorem of (Z. Fehily, K. Kawasetsu and D. Ridout, Classifying relaxed highest-weight modules for admissible-level Bershadsky–Polyakov algebras, Comm. Math. Phys. 385 (2021) 859–904, arXiv:2007.03917 [math.RT]) for nondegenerate admissible levels and extends this classification to a category of weight modules. We also deduce the classification for the nonadmissible level [math], which is new.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-02-23T08:00:00Z
      DOI: 10.1142/S0219199723500633
       
  • Geodesics on adjoint orbits of [math]

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      Authors: Brian Grajales, Lino Grama, Rafaela F. Prado
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      In this paper, we examine the geodesics on adjoint orbits of [math] that are equipped with [math]-invariant metrics, where [math] is the maximal compact subgroup. Our primary technique involves translating this problem into a geometric problem in the tangent bundle of certain [math]-flag manifolds and describing the geodesic equations with respect to the Sasaki metric on the tangent bundle. Additionally, we utilize tools from Lie Theory to obtain explicit descriptions of families of geodesics. We provide a detailed analysis of the case for [math].
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-02-23T08:00:00Z
      DOI: 10.1142/S0219199724500019
       
  • Toroidal extended affine Lie algebras and vertex algebras

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      Authors: Fulin Chen, Haisheng Li, Shaobin Tan
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      In this paper, we study nullity-[math] toroidal extended affine Lie algebras in the context of vertex algebras and their [math]-coordinated modules. Among the main results, we introduce a variant of toroidal extended affine Lie algebras, associate vertex algebras to the variant Lie algebras, and establish a canonical connection between modules for toroidal extended affine Lie algebras and [math]-coordinated modules for these vertex algebras. Furthermore, by employing some results of Billig, we obtain an explicit realization of a class of irreducible modules for the variant Lie algebras.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-02-23T08:00:00Z
      DOI: 10.1142/S0219199724500032
       
  • Perspective functions with nonlinear scaling

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      Authors: Luis M. Briceño-Arias, Patrick L. Combettes, Francisco J. Silva
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      The classical perspective of a function is a construction which transforms a convex function into one that is jointly convex with respect to an auxiliary scaling variable. Motivated by applications in several areas of applied analysis, we investigate an extension of this construct in which the scaling variable is replaced by a nonlinear term. Our construction is placed in the general context of locally convex spaces and it generates a lower semicontinuous convex function under broad assumptions on the underlying functions. Various convex-analytical properties are established and closed-form expressions are derived. Several applications are presented.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-02-19T08:00:00Z
      DOI: 10.1142/S0219199723500657
       
  • Well-posedness and analyticity of solutions for the sixth-order Boussinesq
           equation

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      Authors: Amin Esfahani, Achenef Tesfahun
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      In this paper, the sixth-order Boussinesq equation is studied. We extend the local well-posedness theory for this equation with quadratic and cubic nonlinearities to the high dimensional case. In spite of having the “bad” fourth term [math] in the equation, we derive some dispersive estimates leading to the existence of local solutions which also improves the previous results in the cubic case. In addition, we show persistence of spatial analyticity of solutions for the cubic nonlinearity.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-02-16T08:00:00Z
      DOI: 10.1142/S0219199724500056
       
  • On fractional parabolic equations with Hardy-type potentials

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      Authors: Veronica Felli, Ana Primo, Giovanni Siclari
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      A classification of local asymptotic profiles and strong unique continuation properties are established for a class of fractional heat equations with a Hardy-type potential, via an Almgren–Poon monotonicity formula combined with a blow-up analysis.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-02-14T08:00:00Z
      DOI: 10.1142/S0219199723500621
       
  • On the cohomology of [math] in positive characteristic

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      Authors: Eric Larson
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      Let [math] be a general Brill–Noether curve. A classical problem is to determine when [math], which controls the quadric section of [math]. So far this problem has only been solved in characteristic zero, in which case [math] with finitely many exceptions. In this paper, we extend these results to positive characteristic, uncovering a wealth of new exceptions in characteristic [math].
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-02-14T08:00:00Z
      DOI: 10.1142/S0219199723500670
       
  • The Bernstein problem for [math]-Lipschitz surfaces in three-dimensional
           sub-Finsler Heisenberg groups

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      Authors: Gianmarco Giovannardi, Manuel Ritoré
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      In the Heisenberg group [math] with a sub-Finsler structure, an [math]-Lipschitz surface which is complete, oriented, connected and stable must be a vertical plane. In particular, the result holds for entire intrinsic graphs of Euclidean Lipschitz functions.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-02-09T08:00:00Z
      DOI: 10.1142/S0219199723500487
       
  • Exceptionally simple super-PDE for [math]

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      Authors: Andrea Santi, Dennis The
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      For the largest exceptional simple Lie superalgebra [math], having dimension [math], we provide two explicit geometric realizations as supersymmetries, namely as the symmetry superalgebra of super-PDE systems of second- and third-order, respectively.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-02-01T08:00:00Z
      DOI: 10.1142/S0219199723500530
       
  • Algebraic versions of Hartogs’ theorem

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      Authors: Marcin Bilski, Jacek Bochnak, Wojciech Kucharz
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      Let [math] be an uncountable field of characteristic [math]. For a given function [math], with [math], we prove that [math] is regular if and only if the restriction [math] is a regular function for every algebraic curve [math] in [math] which is either an affine line or is isomorphic to a plane curve in [math] defined by the equation [math], where [math] are prime numbers. We also show that regularity of [math] can be verified on other algebraic curves in [math] with desired geometric properties. Furthermore, if the field [math] is not algebraically closed, we construct a [math]-valued function on [math] that is not regular, but all its restrictions to nonsingular algebraic curves in [math] are regular functions.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-01-29T08:00:00Z
      DOI: 10.1142/S0219199723500669
       
  • Curvature of new Kähler metrics on the total space of Griffiths negative
           vector bundle and quasi-Fuchsian space

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      Authors: Inkang Kim, Xueyuan Wan, Genkai Zhang
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      We study Kähler metrics on the total space of Griffiths negative holomorphic vector bundles over Kähler manifolds. As an application, we construct mapping class group invariant Kähler metrics on [math], the holomorphic tangent bundle of Teichmüller space of a closed surface [math]. Consequently,we obtain a new mapping class group invariant Kähler metric on the quasi-Fuchsian space [math], which extends the Weil–Petersson metric on the Teichmüller space [math]. We also calculate its curvature and prove non-positivity for the curvature along the tautological directions.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-01-24T08:00:00Z
      DOI: 10.1142/S0219199723500591
       
  • A comparison principle for a doubly singular quasilinear anisotropic
           problem

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      Authors: Luigi Montoro, Berardino Sciunzi, Alessandro Trombetta
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      In this paper, we prove a comparison principle for sub-supersolutions to a singular quasilinear problem that involves the anisotropic Finsler operator −ΔpHu := −div(Hp−1(∇u)∇H(∇u)). As a main consequence, we obtain a uniqueness result for weak solutions to the problem (℘). The proof is carried out also proving a sharp regularity result of the solutions up to the boundary. Our results are new even in the euclidean case.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-01-24T08:00:00Z
      DOI: 10.1142/S0219199723500608
       
  • Einstein Lie groups, geodesic orbit manifolds and regular Lie subgroups

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      Authors: Nikolaos Panagiotis Souris
      Abstract: Communications in Contemporary Mathematics, Ahead of Print.
      We study the relation between two special classes of Riemannian Lie groups [math] with a left-invariant metric [math]: The Einstein Lie groups, defined by the condition [math], and the geodesic orbit Lie groups, defined by the property that any geodesic is the integral curve of a Killing vector field. The main results imply that extensive classes of compact simple Einstein Lie groups [math] are not geodesic orbit manifolds, thus providing large-scale answers to a relevant question of Nikonorov. Our approach involves studying and characterizing the [math]-invariant geodesic orbit metrics on Lie groups [math] for a wide class of subgroups [math] that we call (weakly) regular. By-products of our work are structural and characterization results that are of independent interest for the classification problem of geodesic orbit manifolds.
      Citation: Communications in Contemporary Mathematics
      PubDate: 2024-01-24T08:00:00Z
      DOI: 10.1142/S0219199723500682
       
 
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  Subjects -> MATHEMATICS (Total: 1013 journals)
    - APPLIED MATHEMATICS (92 journals)
    - GEOMETRY AND TOPOLOGY (23 journals)
    - MATHEMATICS (714 journals)
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MATHEMATICS (714 journals)                  1 2 3 4 | Last

Showing 1 - 200 of 538 Journals sorted alphabetically
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 2)
Accounting Perspectives     Full-text available via subscription   (Followers: 4)
ACM Transactions on Algorithms (TALG)     Hybrid Journal   (Followers: 14)
ACM Transactions on Mathematical Software (TOMS)     Hybrid Journal   (Followers: 6)
ACS Applied Materials & Interfaces     Hybrid Journal   (Followers: 49)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 2)
Acta Mathematica Hungarica     Hybrid Journal   (Followers: 4)
Acta Mathematica Sinica, English Series     Hybrid Journal   (Followers: 5)
Acta Mathematica Vietnamica     Hybrid Journal  
Acta Mathematicae Applicatae Sinica, English Series     Hybrid Journal  
Advanced Science Letters     Full-text available via subscription   (Followers: 10)
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 6)
Advances in Catalysis     Full-text available via subscription   (Followers: 7)
Advances in Complex Systems     Hybrid Journal   (Followers: 10)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 21)
Advances in Difference Equations     Open Access   (Followers: 4)
Advances in Geosciences (ADGEO)     Open Access   (Followers: 20)
Advances in Linear Algebra & Matrix Theory     Open Access   (Followers: 6)
Advances in Materials Science     Open Access   (Followers: 24)
Advances in Mathematical Physics     Open Access   (Followers: 7)
Advances in Mathematics     Full-text available via subscription   (Followers: 21)
Advances in Numerical Analysis     Open Access   (Followers: 5)
Advances in Operations Research     Open Access   (Followers: 13)
Advances in Operator Theory     Hybrid Journal  
Advances in Pure Mathematics     Open Access   (Followers: 11)
Advances in Science and Research (ASR)     Open Access   (Followers: 9)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2)
African Journal of Educational Studies in Mathematics and Sciences     Full-text available via subscription   (Followers: 10)
African Journal of Mathematics and Computer Science Research     Open Access   (Followers: 8)
Afrika Matematika     Hybrid Journal   (Followers: 2)
Air, Soil & Water Research     Open Access   (Followers: 9)
Al-Qadisiyah Journal for Computer Science and Mathematics     Open Access   (Followers: 5)
AL-Rafidain Journal of Computer Sciences and Mathematics     Open Access   (Followers: 4)
Algebra and Logic     Hybrid Journal   (Followers: 10)
Algebra Colloquium     Hybrid Journal   (Followers: 3)
Algebra Universalis     Hybrid Journal   (Followers: 3)
Algorithmic Operations Research     Open Access   (Followers: 7)
Algorithms     Open Access   (Followers: 15)
Algorithms Research     Open Access   (Followers: 1)
American Journal of Computational and Applied Mathematics     Open Access   (Followers: 4)
American Journal of Mathematical and Management Sciences     Hybrid Journal  
American Journal of Mathematics     Full-text available via subscription   (Followers: 9)
American Journal of Operations Research     Open Access   (Followers: 7)
American Mathematical Monthly     Full-text available via subscription   (Followers: 5)
An International Journal of Optimization and Control: Theories & Applications     Open Access   (Followers: 12)
Analele Universitatii Ovidius Constanta - Seria Matematica     Open Access  
Analysis and Applications     Hybrid Journal   (Followers: 2)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 7)
Annales Mathematicae Silesianae     Open Access  
Annales mathématiques du Québec     Hybrid Journal   (Followers: 3)
Annales Universitatis Mariae Curie-Sklodowska, sectio A – Mathematica     Open Access   (Followers: 1)
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica     Open Access  
Annali di Matematica Pura ed Applicata     Hybrid Journal   (Followers: 1)
Annals of Combinatorics     Hybrid Journal   (Followers: 4)
Annals of Data Science     Hybrid Journal   (Followers: 15)
Annals of Functional Analysis     Hybrid Journal   (Followers: 2)
Annals of Mathematics     Full-text available via subscription   (Followers: 8)
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 13)
Annals of PDE     Hybrid Journal   (Followers: 1)
Annals of Pure and Applied Logic     Open Access   (Followers: 5)
Annals of the Institute of Statistical Mathematics     Hybrid Journal   (Followers: 1)
Annals of West University of Timisoara - Mathematics     Open Access   (Followers: 1)
Annals of West University of Timisoara - Mathematics and Computer Science     Open Access   (Followers: 2)
Annuaire du Collège de France     Open Access   (Followers: 6)
ANZIAM Journal     Open Access   (Followers: 1)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 3)
Applications of Mathematics     Hybrid Journal   (Followers: 4)
Applied Categorical Structures     Hybrid Journal   (Followers: 5)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 16)
Applied Mathematics     Open Access   (Followers: 6)
Applied Mathematics     Open Access   (Followers: 5)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 7)
Applied Mathematics - A Journal of Chinese Universities     Hybrid Journal   (Followers: 1)
Applied Mathematics and Nonlinear Sciences     Open Access   (Followers: 2)
Applied Mathematics Letters     Full-text available via subscription   (Followers: 4)
Applied Mathematics Research eXpress     Hybrid Journal   (Followers: 1)
Applied Network Science     Open Access   (Followers: 3)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 4)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 5)
Arab Journal of Mathematical Sciences     Open Access   (Followers: 3)
Arabian Journal of Mathematics     Open Access   (Followers: 1)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 3)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 4)
Archive of Numerical Software     Open Access  
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 5)
Arnold Mathematical Journal     Hybrid Journal   (Followers: 2)
Artificial Satellites     Open Access   (Followers: 22)
Asia-Pacific Journal of Operational Research     Hybrid Journal   (Followers: 4)
Asian Journal of Algebra     Open Access   (Followers: 1)
Asian Research Journal of Mathematics     Open Access  
Asian-European Journal of Mathematics     Hybrid Journal   (Followers: 2)
Australian Mathematics Teacher, The     Full-text available via subscription   (Followers: 7)
Australian Primary Mathematics Classroom     Full-text available via subscription   (Followers: 5)
Australian Senior Mathematics Journal     Full-text available via subscription   (Followers: 1)
Automatic Documentation and Mathematical Linguistics     Hybrid Journal   (Followers: 4)
Axioms     Open Access   (Followers: 1)
Banach Journal of Mathematical Analysis     Hybrid Journal  
Basin Research     Hybrid Journal   (Followers: 6)
Biomath     Open Access  
BIT Numerical Mathematics     Hybrid Journal  
Boletim Cearense de Educação e História da Matemática     Open Access  
Boletín de la Sociedad Matemática Mexicana     Hybrid Journal  
Bollettino dell'Unione Matematica Italiana     Full-text available via subscription  
British Journal for the History of Mathematics     Hybrid Journal   (Followers: 3)
Bulletin des Sciences Mathamatiques     Full-text available via subscription   (Followers: 3)
Bulletin of Dnipropetrovsk University. Series : Communications in Mathematical Modeling and Differential Equations Theory     Open Access   (Followers: 3)
Bulletin of Mathematical Sciences     Open Access   (Followers: 2)
Bulletin of Symbolic Logic     Full-text available via subscription   (Followers: 4)
Bulletin of the Australian Mathematical Society     Full-text available via subscription   (Followers: 2)
Bulletin of the Brazilian Mathematical Society, New Series     Hybrid Journal  
Bulletin of the Iranian Mathematical Society     Hybrid Journal  
Bulletin of the London Mathematical Society     Hybrid Journal   (Followers: 3)
Bulletin of the Malaysian Mathematical Sciences Society     Hybrid Journal  
Calculus of Variations and Partial Differential Equations     Hybrid Journal   (Followers: 2)
Canadian Journal of Mathematics / Journal canadien de mathématiques     Hybrid Journal  
Canadian Journal of Science, Mathematics and Technology Education     Hybrid Journal   (Followers: 20)
Canadian Mathematical Bulletin     Hybrid Journal  
Carpathian Mathematical Publications     Open Access  
Catalysis in Industry     Hybrid Journal  
CAUCHY     Open Access   (Followers: 1)
CEAS Space Journal     Hybrid Journal   (Followers: 5)
CHANCE     Hybrid Journal   (Followers: 5)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 2)
Chaos, Solitons & Fractals : X     Open Access   (Followers: 1)
ChemSusChem     Hybrid Journal   (Followers: 8)
Chinese Annals of Mathematics, Series B     Hybrid Journal  
Chinese Journal of Catalysis     Full-text available via subscription   (Followers: 2)
Chinese Journal of Mathematics     Open Access  
Ciencia     Open Access  
CODEE Journal     Open Access  
Cogent Mathematics     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 3)
Collectanea Mathematica     Hybrid Journal  
College Mathematics Journal     Hybrid Journal   (Followers: 3)
COMBINATORICA     Hybrid Journal  
Combinatorics, Probability and Computing     Hybrid Journal   (Followers: 5)
Combustion Theory and Modelling     Hybrid Journal   (Followers: 21)
Commentarii Mathematici Helvetici     Hybrid Journal   (Followers: 1)
Communications in Combinatorics and Optimization     Open Access  
Communications in Contemporary Mathematics     Hybrid Journal  
Communications in Mathematical Physics     Hybrid Journal   (Followers: 4)
Communications On Pure & Applied Mathematics     Hybrid Journal   (Followers: 7)
Complex Analysis and its Synergies     Open Access   (Followers: 1)
Complex Variables and Elliptic Equations: An International Journal     Hybrid Journal  
Compositio Mathematica     Full-text available via subscription   (Followers: 2)
Comptes Rendus : Mathematique     Open Access  
Computational and Applied Mathematics     Hybrid Journal   (Followers: 4)
Computational and Mathematical Methods     Hybrid Journal  
Computational and Mathematical Methods in Medicine     Open Access   (Followers: 2)
Computational and Mathematical Organization Theory     Hybrid Journal   (Followers: 2)
Computational Complexity     Hybrid Journal   (Followers: 5)
Computational Mathematics and Modeling     Hybrid Journal   (Followers: 8)
Computational Mechanics     Hybrid Journal   (Followers: 14)
Computational Methods and Function Theory     Hybrid Journal  
Computational Optimization and Applications     Hybrid Journal   (Followers: 10)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 11)
Confluentes Mathematici     Hybrid Journal  
Constructive Mathematical Analysis     Open Access   (Followers: 1)
Contributions to Game Theory and Management     Open Access   (Followers: 1)
COSMOS     Hybrid Journal   (Followers: 1)
Cross Section     Full-text available via subscription   (Followers: 1)
Cryptography and Communications     Hybrid Journal   (Followers: 12)
Cuadernos de Investigación y Formación en Educación Matemática     Open Access  
Cubo. A Mathematical Journal     Open Access  
Current Research in Biostatistics     Open Access   (Followers: 9)
Czechoslovak Mathematical Journal     Hybrid Journal  
Demographic Research     Open Access   (Followers: 15)
Design Journal : An International Journal for All Aspects of Design     Hybrid Journal   (Followers: 39)
Dhaka University Journal of Science     Open Access  
Differential Equations and Dynamical Systems     Hybrid Journal   (Followers: 4)
Digital Experiences in Mathematics Education     Hybrid Journal   (Followers: 3)
Discrete Mathematics     Hybrid Journal   (Followers: 7)
Discrete Mathematics & Theoretical Computer Science     Open Access   (Followers: 1)
Discrete Mathematics, Algorithms and Applications     Hybrid Journal   (Followers: 3)
Doklady Mathematics     Hybrid Journal  
Eco Matemático     Open Access  
Econometrics     Open Access   (Followers: 2)
Educação Matemática Debate     Open Access  
Emergent Scientist     Open Access  
Energy for Sustainable Development     Hybrid Journal   (Followers: 14)
Enseñanza de las Ciencias : Revista de Investigación y Experiencias Didácticas     Open Access  
Entropy     Open Access   (Followers: 5)
ESAIM: Control Optimisation and Calculus of Variations     Open Access   (Followers: 3)
European Journal of Applied Mathematics     Hybrid Journal  
European Journal of Combinatorics     Full-text available via subscription   (Followers: 3)
European Journal of Mathematics     Hybrid Journal   (Followers: 1)
European Scientific Journal     Open Access   (Followers: 11)
Examples and Counterexamples     Open Access   (Followers: 5)
Experimental Mathematics     Hybrid Journal   (Followers: 5)
Expositiones Mathematicae     Hybrid Journal   (Followers: 2)
Facta Universitatis, Series : Mathematics and Informatics     Open Access  
Finite Fields and Their Applications     Full-text available via subscription   (Followers: 6)
Formalized Mathematics     Open Access  
Forum of Mathematics, Pi     Open Access   (Followers: 1)
Forum of Mathematics, Sigma     Open Access   (Followers: 1)
Foundations and Trends® in Econometrics     Full-text available via subscription   (Followers: 6)
Foundations and Trends® in Networking     Full-text available via subscription   (Followers: 1)
Foundations and Trends® in Stochastic Systems     Full-text available via subscription   (Followers: 1)
Foundations and Trends® in Theoretical Computer Science     Full-text available via subscription   (Followers: 1)
Foundations of Computational Mathematics     Hybrid Journal   (Followers: 1)

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