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MATHEMATICS (651 journals)                  1 2 3 4 | Last

Showing 1 - 200 of 538 Journals sorted alphabetically
Abakós     Open Access   (Followers: 3)
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 2)
Academic Voices : A Multidisciplinary Journal     Open Access   (Followers: 2)
Accounting Perspectives     Full-text available via subscription   (Followers: 8)
ACM Transactions on Algorithms (TALG)     Hybrid Journal   (Followers: 16)
ACM Transactions on Computational Logic (TOCL)     Hybrid Journal   (Followers: 4)
ACM Transactions on Mathematical Software (TOMS)     Hybrid Journal   (Followers: 6)
ACS Applied Materials & Interfaces     Full-text available via subscription   (Followers: 21)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 1)
Acta Mathematica     Hybrid Journal   (Followers: 11)
Acta Mathematica Hungarica     Hybrid Journal   (Followers: 2)
Acta Mathematica Scientia     Full-text available via subscription   (Followers: 5)
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: 7)
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 3)
Advances in Calculus of Variations     Hybrid Journal   (Followers: 2)
Advances in Catalysis     Full-text available via subscription   (Followers: 5)
Advances in Complex Systems     Hybrid Journal   (Followers: 7)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 15)
Advances in Decision Sciences     Open Access   (Followers: 4)
Advances in Difference Equations     Open Access   (Followers: 1)
Advances in Fixed Point Theory     Open Access   (Followers: 5)
Advances in Geosciences (ADGEO)     Open Access   (Followers: 10)
Advances in Linear Algebra & Matrix Theory     Open Access   (Followers: 1)
Advances in Materials Sciences     Open Access   (Followers: 16)
Advances in Mathematical Physics     Open Access   (Followers: 5)
Advances in Mathematics     Full-text available via subscription   (Followers: 10)
Advances in Numerical Analysis     Open Access   (Followers: 4)
Advances in Operations Research     Open Access   (Followers: 11)
Advances in Porous Media     Full-text available via subscription   (Followers: 4)
Advances in Pure and Applied Mathematics     Hybrid Journal   (Followers: 5)
Advances in Pure Mathematics     Open Access   (Followers: 4)
Advances in Science and Research (ASR)     Open Access   (Followers: 6)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2)
African Journal of Educational Studies in Mathematics and Sciences     Full-text available via subscription   (Followers: 5)
African Journal of Mathematics and Computer Science Research     Open Access   (Followers: 4)
Afrika Matematika     Hybrid Journal   (Followers: 1)
Air, Soil & Water Research     Open Access   (Followers: 7)
AKSIOMA Journal of Mathematics Education     Open Access   (Followers: 1)
Algebra and Logic     Hybrid Journal   (Followers: 3)
Algebra Colloquium     Hybrid Journal   (Followers: 4)
Algebra Universalis     Hybrid Journal   (Followers: 2)
Algorithmic Operations Research     Full-text available via subscription   (Followers: 5)
Algorithms     Open Access   (Followers: 10)
Algorithms Research     Open Access   (Followers: 1)
American Journal of Biostatistics     Open Access   (Followers: 9)
American Journal of Computational and Applied Mathematics     Open Access   (Followers: 3)
American Journal of Mathematical Analysis     Open Access  
American Journal of Mathematics     Full-text available via subscription   (Followers: 7)
American Journal of Operations Research     Open Access   (Followers: 5)
American Mathematical Monthly     Full-text available via subscription   (Followers: 6)
An International Journal of Optimization and Control: Theories & Applications     Open Access   (Followers: 7)
Analele Universitatii Ovidius Constanta - Seria Matematica     Open Access   (Followers: 1)
Analysis     Hybrid Journal   (Followers: 2)
Analysis and Applications     Hybrid Journal   (Followers: 1)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 3)
Analysis Mathematica     Full-text available via subscription  
Annales Mathematicae Silesianae     Open Access  
Annales mathématiques du Québec     Hybrid Journal   (Followers: 4)
Annales UMCS, 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: 3)
Annals of Data Science     Hybrid Journal   (Followers: 8)
Annals of Discrete Mathematics     Full-text available via subscription   (Followers: 6)
Annals of Mathematics     Full-text available via subscription  
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 6)
Annals of Pure and Applied Logic     Open Access   (Followers: 2)
Annals of the Alexandru Ioan Cuza University - Mathematics     Open Access  
Annals of the Institute of Statistical Mathematics     Hybrid Journal   (Followers: 1)
Annals of West University of Timisoara - Mathematics     Open Access  
Annuaire du Collège de France     Open Access   (Followers: 5)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 2)
Applications of Mathematics     Hybrid Journal   (Followers: 1)
Applied Categorical Structures     Hybrid Journal   (Followers: 2)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 12)
Applied Mathematics     Open Access   (Followers: 3)
Applied Mathematics     Open Access   (Followers: 4)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 4)
Applied Mathematics - A Journal of Chinese Universities     Hybrid Journal  
Applied Mathematics Letters     Full-text available via subscription   (Followers: 1)
Applied Mathematics Research eXpress     Hybrid Journal   (Followers: 1)
Applied Network Science     Open Access  
Applied Numerical Mathematics     Hybrid Journal   (Followers: 5)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 4)
Arab Journal of Mathematical Sciences     Open Access   (Followers: 2)
Arabian Journal of Mathematics     Open Access   (Followers: 2)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 1)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 4)
Archive of Numerical Software     Open Access  
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 4)
Arkiv för Matematik     Hybrid Journal   (Followers: 1)
Arnold Mathematical Journal     Hybrid Journal   (Followers: 1)
Artificial Satellites : The Journal of Space Research Centre of Polish Academy of Sciences     Open Access   (Followers: 19)
Asia-Pacific Journal of Operational Research     Hybrid Journal   (Followers: 3)
Asian Journal of Algebra     Open Access   (Followers: 1)
Asian Journal of Current Engineering & Maths     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: 2)
Australian Senior Mathematics Journal     Full-text available via subscription   (Followers: 1)
Automatic Documentation and Mathematical Linguistics     Hybrid Journal   (Followers: 5)
Axioms     Open Access  
Baltic International Yearbook of Cognition, Logic and Communication     Open Access  
Basin Research     Hybrid Journal   (Followers: 3)
BIBECHANA     Open Access  
BIT Numerical Mathematics     Hybrid Journal  
BoEM - Boletim online de Educação Matemática     Open Access  
Boletim Cearense de Educação e História da Matemática     Open Access  
Boletim de Educação Matemática     Open Access  
Boletín de la Sociedad Matemática Mexicana     Hybrid Journal  
Bollettino dell'Unione Matematica Italiana     Full-text available via subscription   (Followers: 1)
British Journal of Mathematical and Statistical Psychology     Full-text available via subscription   (Followers: 21)
Bruno Pini Mathematical Analysis Seminar     Open Access  
Buletinul Academiei de Stiinte a Republicii Moldova. Matematica     Open Access   (Followers: 7)
Bulletin des Sciences Mathamatiques     Full-text available via subscription   (Followers: 4)
Bulletin of Dnipropetrovsk University. Series : Communications in Mathematical Modeling and Differential Equations Theory     Open Access   (Followers: 1)
Bulletin of Mathematical Sciences     Open Access   (Followers: 1)
Bulletin of the Brazilian Mathematical Society, New Series     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  
Canadian Journal of Science, Mathematics and Technology Education     Hybrid Journal   (Followers: 18)
Carpathian Mathematical Publications     Open Access   (Followers: 1)
Catalysis in Industry     Hybrid Journal   (Followers: 1)
CEAS Space Journal     Hybrid Journal  
CHANCE     Hybrid Journal   (Followers: 5)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 3)
ChemSusChem     Hybrid Journal   (Followers: 7)
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  
Clean Air Journal     Full-text available via subscription   (Followers: 2)
Cogent Mathematics     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 4)
Collectanea Mathematica     Hybrid Journal  
College Mathematics Journal     Full-text available via subscription   (Followers: 2)
COMBINATORICA     Hybrid Journal  
Combustion Theory and Modelling     Hybrid Journal   (Followers: 13)
Commentarii Mathematici Helvetici     Hybrid Journal   (Followers: 1)
Communications in Contemporary Mathematics     Hybrid Journal  
Communications in Mathematical Physics     Hybrid Journal   (Followers: 1)
Communications On Pure & Applied Mathematics     Hybrid Journal   (Followers: 3)
Complex Analysis and its Synergies     Open Access   (Followers: 2)
Complex Variables and Elliptic Equations: An International Journal     Hybrid Journal  
Complexus     Full-text available via subscription  
Composite Materials Series     Full-text available via subscription   (Followers: 9)
Comptes Rendus Mathematique     Full-text available via subscription   (Followers: 1)
Computational and Applied Mathematics     Hybrid Journal   (Followers: 2)
Computational and Mathematical Methods in Medicine     Open Access   (Followers: 2)
Computational and Mathematical Organization Theory     Hybrid Journal   (Followers: 2)
Computational Complexity     Hybrid Journal   (Followers: 4)
Computational Mathematics and Modeling     Hybrid Journal   (Followers: 8)
Computational Mechanics     Hybrid Journal   (Followers: 4)
Computational Methods and Function Theory     Hybrid Journal  
Computational Optimization and Applications     Hybrid Journal   (Followers: 7)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 5)
Concrete Operators     Open Access   (Followers: 4)
Confluentes Mathematici     Hybrid Journal  
COSMOS     Hybrid Journal  
Cryptography and Communications     Hybrid Journal   (Followers: 14)
Cuadernos de Investigación y Formación en Educación Matemática     Open Access  
Cubo. A Mathematical Journal     Open Access  
Czechoslovak Mathematical Journal     Hybrid Journal   (Followers: 1)
Demographic Research     Open Access   (Followers: 11)
Demonstratio Mathematica     Open Access  
Dependence Modeling     Open Access  
Design Journal : An International Journal for All Aspects of Design     Hybrid Journal   (Followers: 29)
Developments in Clay Science     Full-text available via subscription   (Followers: 1)
Developments in Mineral Processing     Full-text available via subscription   (Followers: 3)
Dhaka University Journal of Science     Open Access  
Differential Equations and Dynamical Systems     Hybrid Journal   (Followers: 2)
Discrete Mathematics     Hybrid Journal   (Followers: 7)
Discrete Mathematics & Theoretical Computer Science     Open Access  
Discrete Mathematics, Algorithms and Applications     Hybrid Journal   (Followers: 2)
Discussiones Mathematicae Graph Theory     Open Access   (Followers: 1)
Doklady Mathematics     Hybrid Journal  
Duke Mathematical Journal     Full-text available via subscription   (Followers: 1)
Edited Series on Advances in Nonlinear Science and Complexity     Full-text available via subscription  
Electronic Journal of Graph Theory and Applications     Open Access   (Followers: 2)
Electronic Notes in Discrete Mathematics     Full-text available via subscription   (Followers: 2)
Elemente der Mathematik     Full-text available via subscription   (Followers: 3)
Energy for Sustainable Development     Hybrid Journal   (Followers: 9)
Enseñanza de las Ciencias : Revista de Investigación y Experiencias Didácticas     Open Access  
Ensino da Matemática em Debate     Open Access  
Entropy     Open Access   (Followers: 5)
ESAIM: Control Optimisation and Calculus of Variations     Full-text available via subscription   (Followers: 1)
European Journal of Combinatorics     Full-text available via subscription   (Followers: 4)
European Journal of Mathematics     Hybrid Journal   (Followers: 1)
European Scientific Journal     Open Access   (Followers: 2)
Experimental Mathematics     Hybrid Journal   (Followers: 4)
Expositiones Mathematicae     Hybrid Journal   (Followers: 2)
Facta Universitatis, Series : Mathematics and Informatics     Open Access  
Fasciculi Mathematici     Open Access  
Finite Fields and Their Applications     Full-text available via subscription   (Followers: 4)
Fixed Point Theory and Applications     Open Access   (Followers: 1)
Formalized Mathematics     Open Access   (Followers: 2)
Foundations and Trends® in Econometrics     Full-text available via subscription   (Followers: 4)

        1 2 3 4 | Last

Journal Cover Annali di Matematica Pura ed Applicata
  [SJR: 1.167]   [H-I: 26]   [1 followers]  Follow
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1618-1891 - ISSN (Online) 0373-3114
   Published by Springer-Verlag Homepage  [2355 journals]
  • Endpoint bounds for quasiradial Fourier multipliers
    • Authors: Jongchon Kim
      Pages: 773 - 789
      Abstract: We consider quasiradial Fourier multipliers, i.e., multipliers of the form \(m(a(\xi ))\) for a class of distance functions a. We give a necessary and sufficient condition for the multiplier transformations to be bounded on \(L^p\) for a certain range of p. In addition, when m is compactly supported in \((0,\infty )\) , we give a similar result for associated maximal operators.
      PubDate: 2017-06-01
      DOI: 10.1007/s10231-016-0595-2
      Issue No: Vol. 196, No. 3 (2017)
  • Homogenization and concentrated capacity for the heat equation with two
           kinds of microstructures: uniform cases
    • Authors: Laura Gioia Andrea Keller
      Pages: 791 - 818
      Abstract: In the present article we investigate how geometric microstructures of a domain can affect the diffusion on the macroscopic level. More precisely, we look at a domain with additional microstructures of two kinds, the first one are periodically arranged “horizontal barriers” and the second one are “vertical barriers” which are not periodically arranged, but uniform on certain intervals. Both structures are parametrized in size by a small parameter \(\varepsilon \) . Starting from such a geometry combined with a diffusion(-reaction) model, we derive the homogenized limit and discuss the differences of the resulting limit problems for various particular arrangements of the microstructures.
      PubDate: 2017-06-01
      DOI: 10.1007/s10231-016-0596-1
      Issue No: Vol. 196, No. 3 (2017)
  • Generalized adjoint forms on algebraic varieties
    • Authors: Luca Rizzi; Francesco Zucconi
      Pages: 819 - 836
      Abstract: We prove a full generalization of the Castelnuovo’s free pencil trick. We show its analogies with Rizzi and Zucconi (Differential forms and quadrics of the canonical image. arXiv:1409.1826, Theorem 2.1.7); see also Pirola and Zucconi (J Algebraic Geom 12(3):535–572, Theorem 1.5.1). Moreover we find a new formulation of the Griffiths’s infinitesimal Torelli Theorem for smooth projective hypersurfaces using meromorphic 1-forms.
      PubDate: 2017-06-01
      DOI: 10.1007/s10231-016-0597-0
      Issue No: Vol. 196, No. 3 (2017)
  • Slice Fourier transform and convolutions
    • Authors: Lander Cnudde; Hendrik De Bie
      Pages: 837 - 862
      Abstract: Recently the construction of various integral transforms for slice monogenic functions has gained a lot of attention. In line with these developments, the article at hand introduces the slice Fourier transform. In the first part, the kernel function of this integral transform is constructed using the Mehler formula. An explicit expression for the integral transform is obtained and allows for the study of its properties. In the second part, two kinds of corresponding convolutions are examined: Mustard convolutions and convolutions based on generalised translation operators. The paper finishes by demonstrating the connection between both.
      PubDate: 2017-06-01
      DOI: 10.1007/s10231-016-0598-z
      Issue No: Vol. 196, No. 3 (2017)
  • New developments on constant angle property in $${\mathbb {S}}^2\times
           {\mathbb {R}}$$ S 2 × R
    • Authors: Ana Irina Nistor
      Pages: 863 - 875
      Abstract: In the present paper, we classify curves and surfaces in \({\mathbb {S}}^2\times \mathbb {R}\) , which make constant angle with a rotational Killing vector field. We obtain the explicit parametrizations of such curves and surfaces, and we find examples in some particular cases. Finally, we give the complete classification of minimal constant angle surfaces in \({\mathbb {S}}^2\times \mathbb {R}\) .
      PubDate: 2017-06-01
      DOI: 10.1007/s10231-016-0599-y
      Issue No: Vol. 196, No. 3 (2017)
  • Comparison principles for p -Laplace equations with lower order terms
    • Authors: Tommaso Leonori; Alessio Porretta; Giuseppe Riey
      Pages: 877 - 903
      Abstract: We prove comparison principles for quasilinear elliptic equations whose simplest model is $$\begin{aligned} \lambda u -\Delta _p u + H(x,Du)=0 \quad x\in \Omega , \end{aligned}$$ where \(\Delta _p u = \text { div }( Du ^{p-2} Du)\) is the p-Laplace operator with \(p> 2\) , \(\lambda \ge 0\) , \(H(x,\xi ):\Omega \times \mathbb {R}^{N}\rightarrow \mathbb {R}\) is a Carathéodory function and \(\Omega \subset \mathbb {R}^{N}\) is a bounded domain, \(N\ge 2\) . We collect several comparison results for weak sub- and super-solutions under different setting of assumptions and with possibly different methods. A strong comparison result is also proved for more regular solutions.
      PubDate: 2017-06-01
      DOI: 10.1007/s10231-016-0600-9
      Issue No: Vol. 196, No. 3 (2017)
  • Pseudospherical surfaces with singularities
    • Authors: David Brander
      Pages: 905 - 928
      Abstract: We study a generalization of constant Gauss curvature \(-1\) surfaces in Euclidean 3-space, based on Lorentzian harmonic maps, that we call pseudospherical frontals. We analyse the singularities of these surfaces, dividing them into those of characteristic and non-characteristic type. We give methods for constructing all non-degenerate singularities of both types, as well as many degenerate singularities. We also give a method for solving the singular geometric Cauchy problem: construct a pseudospherical frontal containing a given regular space curve as a non-degenerate singular curve. The solution is unique for most curves, but for some curves there are infinitely many solutions, and this is encoded in the curvature and torsion of the curve.
      PubDate: 2017-06-01
      DOI: 10.1007/s10231-016-0601-8
      Issue No: Vol. 196, No. 3 (2017)
  • Hankel determinants, Padé approximations, and irrationality exponents
           for p -adic numbers
    • Authors: Yann Bugeaud; Jia-Yan Yao
      Pages: 929 - 946
      Abstract: The irrationality exponent of an irrational p-adic number \(\xi \) , which measures the approximation rate of \(\xi \) by rational numbers, is in general very difficult to compute explicitly. In this work, we shall show that the irrationality exponents of large classes of automatic p-adic numbers and Mahler p-adic numbers (which are transcendental) are exactly equal to 2. Our classes contain the Thue–Morse–Mahler p-adic numbers, the regular paperfolding p-adic numbers, the Stern p-adic numbers, among others.
      PubDate: 2017-06-01
      DOI: 10.1007/s10231-016-0602-7
      Issue No: Vol. 196, No. 3 (2017)
  • Spaces of Goldberg type on certain measured metric spaces
    • Authors: Stefano Meda; Sara Volpi
      Pages: 947 - 981
      Abstract: In this paper, we define a space \({\mathfrak h}^1(M)\) of Hardy–Goldberg type on a measured metric space satisfying some mild conditions. We prove that the dual of \({\mathfrak h}^1(M)\) may be identified with \(\mathfrak {b}\mathfrak {m}\mathfrak {o}(M)\) , a space of functions with “local” bounded mean oscillation, and that if p is in (1, 2), then \(L^p(M)\) is a complex interpolation space between \({\mathfrak h}^1(M)\) and \(L^2(M)\) . This extends previous results of Strichartz, Carbonaro, Mauceri and Meda, and Taylor. Applications to singular integral operators on Riemannian manifolds are given.
      PubDate: 2017-06-01
      DOI: 10.1007/s10231-016-0603-6
      Issue No: Vol. 196, No. 3 (2017)
  • Classification of conformal minimal immersions of constant curvature from
           $$S^2$$ S 2 to $$Q_n$$ Q n
    • Authors: Xiaoxiang Jiao; Mingyan Li
      Pages: 1001 - 1023
      Abstract: In this paper, we investigate geometry of conformal minimal two-spheres immersed in \(G(2,n;\mathbb {R})\) and give a classification theorem of linearly full conformal minimal immersions of constant curvature from \(S^2\) to \(G(2,n;\mathbb {R})\) , or equivalently, a complex hyperquadric \(Q_{n-2}\) under some conditions.
      PubDate: 2017-06-01
      DOI: 10.1007/s10231-016-0605-4
      Issue No: Vol. 196, No. 3 (2017)
  • Real rank geometry of ternary forms
    • Authors: Mateusz Michałek; Hyunsuk Moon; Bernd Sturmfels; Emanuele Ventura
      Pages: 1025 - 1054
      Abstract: We study real ternary forms whose real rank equals the generic complex rank, and we characterize the semialgebraic set of sums of powers representations with that rank. Complete results are obtained for quadrics and cubics. For quintics, we determine the real rank boundary: It is a hypersurface of degree 168. For quartics, sextics and septics, we identify some of the components of the real rank boundary. The real varieties of sums of powers are stratified by discriminants that are derived from hyperdeterminants.
      PubDate: 2017-06-01
      DOI: 10.1007/s10231-016-0606-3
      Issue No: Vol. 196, No. 3 (2017)
  • The adjacency matrix of a graph as a data table: a geometric perspective
    • Authors: Giampiero Chiaselotti; Tommaso Gentile; Federico G. Infusino; Paolo A. Oliverio
      Pages: 1073 - 1112
      Abstract: In this paper we continue a research project concerning the study of a graph from the perspective of granular computation. To be more specific, we interpret the adjacency matrix of any simple undirected graph G in terms of data information table, which is one of the most studied structures in database theory. Granular computing (abbreviated GrC) is a well-developed research field in applied and theoretical information sciences; nevertheless, in this paper we address our efforts toward a purely mathematical development of the link between GrC and graph theory. From this perspective, the well-studied notion of indiscernibility relation in GrC becomes a symmetry relation with respect to a given vertex subset in graph theory; therefore, the investigation of this symmetry relation turns out to be the main object of study in this paper. In detail, we study a simple undirected graph G by assuming a generic vertex subset W as reference system with respect to which examine the symmetry of all vertex subsets of G. The change of perspective from G without reference system to the pair (G, W) is similar to what occurs in the transition from an affine space to a vector space. We interpret the symmetry blocks in the reference system (G, W) as particular equivalence classes of vertices in G, and we study the geometric properties of all reference systems (G, W), when W runs over all vertex subsets of G. We also introduce three hypergraph models and a vertex set partition lattice associated to G, by taking as general models of reference several classical notions of GrC. For all these constructions, we provide a geometric characterization and we determine their structure for basic graph families. Finally, we apply a wide part of our work to study the important case of the Petersen graph.
      PubDate: 2017-06-01
      DOI: 10.1007/s10231-016-0608-1
      Issue No: Vol. 196, No. 3 (2017)
  • On three-dimensional plasmon resonances in elastostatics
    • Authors: Hongjie Li; Hongyu Liu
      Pages: 1113 - 1135
      Abstract: We consider plasmon resonances for the elastostatic system in \({\mathbb {R}}^3\) associated with a very broad class of sources. The plasmonic device takes a general core–shell–matrix form with the metamaterial located in the shell. It is shown that the plasmonic device in the literature which induces resonance in \({\mathbb {R}}^2\) does not induce resonance in \({\mathbb {R}}^3\) . We then construct two novel plasmonic devices with suitable plasmon constants, varying according to the source term or the loss parameter, that can induce resonances. If there is no core, we show that resonance always occurs. If there is a core of an arbitrary shape, we show that the resonance strongly depends on the location of the source. In fact, there exists a critical radius such that resonance occurs for sources lying within the critical radius, whereas resonance does not occur for sources lying outside the critical radius. Our argument is based on the variational technique by making use of the primal and dual variational principles for the elastostatic system, along with a highly technical construction of the associated perfect plasmon elastic waves.
      PubDate: 2017-06-01
      DOI: 10.1007/s10231-016-0609-0
      Issue No: Vol. 196, No. 3 (2017)
  • Prolongation of Tanaka structures: an alternative approach
    • Authors: Dmitri Alekseevsky; Liana David
      Pages: 1137 - 1164
      Abstract: The classical theory of prolongation of G-structures was generalized by N. Tanaka to a wide class of geometric structures (Tanaka structures), which are defined on a non-holonomic distribution. Examples of Tanaka structures include subriemannian, subconformal, CR-structures, structures associated with second-order differential equations, and structures defined by gradings of Lie algebras (in the framework of parabolic geometries). Tanaka’s prolongation procedure associates with a Tanaka structure of finite order a manifold with an absolute parallelism. It is a very fruitful method for the description of local invariants, investigation of the automorphism group, and equivalence problem. In this paper, we develop an alternative constructive approach for Tanaka’s prolongation procedure, based on the theory of quasi-gradations of filtered vector spaces, G-structures, and their torsion functions.
      PubDate: 2017-06-01
      DOI: 10.1007/s10231-016-0610-7
      Issue No: Vol. 196, No. 3 (2017)
  • Homogenization of an incompressible stationary flow of an
           electrorheological fluid
    • Authors: Miroslav Bulíček; Martin Kalousek; Petr Kaplický
      Pages: 1185 - 1202
      Abstract: We combine two-scale convergence, theory of monotone operators and results on approximation of Sobolev functions by Lipschitz functions to prove a homogenization process for an incompressible flow of a generalized Newtonian fluid. We avoid the necessity of testing the weak formulation of the initial and homogenized systems by corresponding weak solutions, which allows optimal assumptions on lower bound for a growth of the elliptic term. We show that the stress tensor for homogenized problem depends on the symmetric part of the velocity gradient involving the limit of a sequence selected from a family of solutions of initial problems.
      PubDate: 2017-06-01
      DOI: 10.1007/s10231-016-0612-5
      Issue No: Vol. 196, No. 3 (2017)
  • On derivations of subalgebras of real semisimple Lie algebras
    • Authors: Paolo Ciatti; Michael G. Cowling
      Abstract: Let \(\mathfrak {g}\) be a real semisimple Lie algebra with Iwasawa decomposition \(\mathfrak {k} \oplus \mathfrak {a} \oplus \mathfrak {n}\) . We show that, except for some explicit exceptional cases, every derivation of the nilpotent subalgebra \(\mathfrak {n}\) that preserves its restricted root space decomposition is of the form \({\text {ad}}( W)\) , where \(W \in \mathfrak {m}\oplus \mathfrak {a}\) .
      PubDate: 2017-06-28
      DOI: 10.1007/s10231-017-0677-9
  • Harmonicity of the Atiyah–Hitchin–Singer and Eells–Salamon almost
           complex structures
    • Authors: Johann Davidov; Oleg Mushkarov
      Abstract: In this paper, we describe the oriented Riemannian four-manifolds M for which the Atiyah–Hitchin–Singer or Eells–Salamon almost complex structure on the twistor space \({\mathcal {Z}}\) of M determines a harmonic map from \({\mathcal {Z}}\) into its twistor space.
      PubDate: 2017-06-08
      DOI: 10.1007/s10231-017-0675-y
  • Relations among Gauge and Pettis integrals for cwk ( X )-valued
    • Authors: D. Candeloro; L. Di Piazza; K. Musiał; A. R. Sambucini
      Abstract: The aim of this paper is to study relationships among “gauge integrals” (Henstock, McShane, Birkhoff) and Pettis integral of multifunctions whose values are weakly compact and convex subsets of a general Banach space, not necessarily separable. For this purpose, we prove the existence of variationally Henstock integrable selections for variationally Henstock integrable multifunctions. Using this and other known results concerning the existence of selections integrable in the same sense as the corresponding multifunctions, we obtain three decomposition theorems (Theorems 3.2, 4.2, 5.3). As applications of such decompositions, we deduce characterizations of Henstock (Theorem 3.3) and \(\mathcal H\) (Theorem 4.3) integrable multifunctions, together with an extension of a well-known theorem of Fremlin [22, Theorem 8].
      PubDate: 2017-06-06
      DOI: 10.1007/s10231-017-0674-z
  • Inequalities for eigenvalues of the buckling problem of arbitrary order
    • Authors: Qing-Ming Cheng; Xuerong Qi; Qiaoling Wang; Changyu Xia
      Abstract: This paper studies eigenvalues of the buckling problem of arbitrary order on bounded domains in Euclidean spaces and spheres. We prove universal bounds for the kth eigenvalue in terms of the lower ones independent of the domains. Our results strengthen the recent work in Jost et al. (Commun Partial Differ Equ 35:1563–1589, 2010) and generalize Cheng–Yang’s recent estimates (Cheng and Yang in Trans Am Math Soc 364:6139–6158, 2012) on the buckling eigenvalues of order two to arbitrary order.
      PubDate: 2017-06-02
      DOI: 10.1007/s10231-017-0676-x
  • Homogenization of an evolution problem with $$ L\log L$$ L log L data in a
           domain with oscillating boundary
    • Authors: Antonio Gaudiello; Olivier Guibé
      Abstract: We consider a N-dimensional structure, \(N\in \mathbb {N}\setminus \{1\}\) , with a very rough boundary. Precisely, in 3D the structure consists in a box with the upper side covered with \(\varepsilon \) -periodically distributed asperities having fixed height and size depending on \(\varepsilon \) . In this structure, we study the asymptotic behavior, as \(\varepsilon \) vanishes, of an evolution Neumann problem with source term and initial data having \(L\log L\) a priori estimates. We identify the limit problem.
      PubDate: 2017-06-01
      DOI: 10.1007/s10231-017-0673-0
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