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  Subjects -> MATHEMATICS (Total: 864 journals)
    - APPLIED MATHEMATICS (69 journals)
    - GEOMETRY AND TOPOLOGY (19 journals)
    - MATHEMATICS (642 journals)
    - MATHEMATICS (GENERAL) (40 journals)
    - NUMERICAL ANALYSIS (19 journals)
    - PROBABILITIES AND MATH STATISTICS (75 journals)

MATHEMATICS (642 journals)                  1 2 3 4 | Last

Showing 1 - 200 of 538 Journals sorted alphabetically
Abakós     Open Access   (Followers: 4)
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: 6)
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: 10)
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: 5)
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: 9)
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: 6)
Advances in Mathematics     Full-text available via subscription   (Followers: 10)
Advances in Numerical Analysis     Open Access   (Followers: 3)
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: 2)
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: 9)
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: 4)
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 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: 17)
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: 19)
Bruno Pini Mathematical Analysis Seminar     Open Access  
Buletinul Academiei de Stiinte a Republicii Moldova. Matematica     Open Access   (Followers: 6)
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: 2)
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: 1)
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: 12)
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: 28)
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: 4)
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: 3)
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)
Foundations and Trends® in Networking     Full-text available via subscription   (Followers: 1)

        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  [2340 journals]
  • Stability for quantitative photoacoustic tomographywith well-chosen
           illuminations
    • Authors: Giovanni Alessandrini; Michele Di Cristo; Elisa Francini; Sergio Vessella
      Pages: 395 - 406
      Abstract: Abstract We treat the stability issue for the three-dimensional inverse imaging modality called quantitative photoacoustic tomography. We provide universal choices of the illuminations which enable to recover, in a Hölder stable fashion, the diffusion and absorption coefficients from the interior pressure data. With such choices of illuminations we do not need the nondegeneracy conditions commonly used in previous studies, which are difficult to be verified a priori.
      PubDate: 2017-04-01
      DOI: 10.1007/s10231-016-0577-4
      Issue No: Vol. 196, No. 2 (2017)
       
  • Submanifolds with nonpositive extrinsic curvature
    • Authors: Samuel Canevari; Guilherme Machado de Freitas; Fernando Manfio
      Pages: 407 - 426
      Abstract: Abstract We prove that complete submanifolds, on which the weak Omori-Yau maximum principle for the Hessian holds, with low codimension and bounded by cylinders of small radius must have points rich in large positive extrinsic curvature. The lower the codimension is, the richer such points are. The smaller the radius is, the larger such curvatures are. This work unifies and generalizes several previous results on submanifolds with nonpositive extrinsic curvature.
      PubDate: 2017-04-01
      DOI: 10.1007/s10231-016-0578-3
      Issue No: Vol. 196, No. 2 (2017)
       
  • Asymptotically linear fractional p -Laplacian equations
    • Authors: Rossella Bartolo; Giovanni Molica Bisci
      Pages: 427 - 442
      Abstract: Abstract In this paper we study the multiplicity of weak solutions to (possibly resonant) nonlocal equations involving the fractional p-Laplacian operator. More precisely, we consider a Dirichlet problem driven by the fractional p-Laplacian operator and involving a subcritical nonlinear term which does not satisfy the technical Ambrosetti–Rabinowitz condition. By framing this problem in an appropriate variational setting, we prove a multiplicity theorem.
      PubDate: 2017-04-01
      DOI: 10.1007/s10231-016-0579-2
      Issue No: Vol. 196, No. 2 (2017)
       
  • Stability of odd periodic solutions in a resonant oscillator
    • Authors: Daniel Núñez; Andrés Rivera; Gian Rossodivita
      Pages: 443 - 455
      Abstract: Abstract We obtain an odd \(2\pi \) -periodic solution \(\varphi \) in a driven differential equation $$\begin{aligned} \ddot{x}+g(x)=\varepsilon p(t), \end{aligned}$$ where g and p are odd smooth functions with \(g^{\prime }(0)=n^{2}\) for some \(n\in \mathbb {N}\) and \(g^{\prime \prime \prime }(0)\ne 0\) . The periodic solution \(\varphi \) is obtained by continuation of the equilibrium \(x\equiv 0\) of the unperturbed problem \((\varepsilon =0)\) for small \(\varepsilon \) . In order to prove this result, we establish an extension of a Loud’s version of the implicit function theorem at rank 0. Moreover, we present sufficient conditions for the existence of one or three odd \(2\pi \) -periodic continuations and also we give conditions for their linear stability.
      PubDate: 2017-04-01
      DOI: 10.1007/s10231-016-0580-9
      Issue No: Vol. 196, No. 2 (2017)
       
  • Extensions of degree $$p^\ell $$ p ℓ of a p -adic field
    • Authors: Maria Rosaria Pati
      Pages: 457 - 477
      Abstract: Abstract Given a p-adic field K and a prime number \(\ell \) , we count the total number of the isomorphism classes of \(p^\ell \) -extensions of K having no intermediate fields. Moreover, for each group that can appear as Galois group of the normal closure of such an extension, we count the number of isomorphism classes that contain extensions whose normal closure has Galois group isomorphic to the given group. Finally, we determine the ramification groups and the discriminant of the composite of all \(p^\ell \) -extensions of K with no intermediate fields. The principal tool is a result, proved at the beginning of the paper, which states that there is a one-to-one correspondence between the isomorphism classes of extensions of degree \(p^\ell \) of K having no intermediate extensions and the irreducible H-submodules of dimension \(\ell \) of \(F^*{/}{F^*}^p\) , where F is the composite of certain fixed normal extensions of K and H is its Galois group over K.
      PubDate: 2017-04-01
      DOI: 10.1007/s10231-016-0581-8
      Issue No: Vol. 196, No. 2 (2017)
       
  • Superlinear Neumann problems with the p -Laplacian plus an indefinite
           potential
    • Authors: Genni Fragnelli; Dimitri Mugnai; Nikolaos S. Papageorgiou
      Pages: 479 - 517
      Abstract: Abstract We consider nonlinear Neumann problems driven by the p-Laplacian plus an indefinite potential and with a superlinear reaction which need not satisfy the Ambrosetti–Rabinowitz condition. First, we prove an existence theorem, and then, under stronger conditions on the reaction, we prove a multiplicity theorem producing three nontrivial solutions. Then, we examine parametric problems with competing nonlinearities (concave and convex terms). We show that for all small values of the parameter \(\lambda >0\) , the problem has five nontrivial solutions and if \(p=2\) (semilinear equation), there are six nontrivial solutions. Finally, we prove a bifurcation result describing the set of positive solutions as the parameter \(\lambda >0\) varies.
      PubDate: 2017-04-01
      DOI: 10.1007/s10231-016-0582-7
      Issue No: Vol. 196, No. 2 (2017)
       
  • Algebraic approximation preserving dimension
    • Authors: M. Ferrarotti; E. Fortuna; L. Wilson
      Pages: 519 - 531
      Abstract: Abstract We prove that each semialgebraic subset of \({\mathbb R}^n\) of positive codimension can be locally approximated of any order by means of an algebraic set of the same dimension. As a consequence of previous results, algebraic approximation preserving dimension holds also for semianalytic sets.
      PubDate: 2017-04-01
      DOI: 10.1007/s10231-016-0583-6
      Issue No: Vol. 196, No. 2 (2017)
       
  • Comments on Sampson’s approach toward Hodge conjecture on Abelian
           varieties
    • Authors: Tuyen Trung Truong
      Pages: 533 - 538
      Abstract: Abstract Let A be an Abelian variety of dimension n. For \(0<p<2n\) an odd integer, Sampson constructed a surjective homomorphism \(\pi {:}\,J^p(A)\rightarrow A\) , where \(J^p(A)\) is the higher Weil Jacobian variety of A. Let \({\widehat{\omega }}\) be a fixed form in \(H^{1,1}(J^p(A),{\mathbb {Q}})\) , and \(N=\dim (J^p(A))\) . He observes that if the map \(\pi _*({\widehat{\omega }}^{N-p-1}\wedge .){:}\, H^{1,1}(J^p(A),{\mathbb {Q}})\rightarrow H^{n-p,n-p}(A,{\mathbb {Q}})\) is injective, then the Hodge conjecture is true for A in bidegree (p, p). In this paper, we give some clarification of the approach and show that the map above is not injective except some special cases where the Hodge conjecture is already known. We propose a modified approach.
      PubDate: 2017-04-01
      DOI: 10.1007/s10231-016-0584-5
      Issue No: Vol. 196, No. 2 (2017)
       
  • Generalized fundamental matrices as Grassmann tensors
    • Authors: Marina Bertolini; GianMario Besana; Cristina Turrini
      Pages: 539 - 553
      Abstract: Abstract Given two linear projections of maximal rank from \({\mathbb P}^{k}\) to \({\mathbb P}^{h_1}\) and \({\mathbb P}^{h_2},\) with \(k\ge 3\) and \(h_1+h_2\ge k+1,\) the Grassmann tensor introduced by Hartley and Schaffalitzky (Int J Comput Vis 83(3):274–293, 2009. doi:10.1007/s11263-009-0225-1), turns out to be a generalized fundamental matrix. Such matrices are studied in detail and, in particular, their rank is computed. The dimension of the variety that parameterizes such matrices is also determined. An algorithmic application of the generalized fundamental matrix to projective reconstruction is described.
      PubDate: 2017-04-01
      DOI: 10.1007/s10231-016-0585-4
      Issue No: Vol. 196, No. 2 (2017)
       
  • Interior regularity of solutions of non-local equations in Sobolev and
           Nikol’skii spaces
    • Authors: Matteo Cozzi
      Pages: 555 - 578
      Abstract: Abstract We prove interior  \(H^{2 s - \varepsilon }\) regularity for weak solutions of linear elliptic integro-differential equations close to the fractional s-Laplacian. The result is obtained via intermediate estimates in Nikol’skii spaces, which are in turn carried out by means of an appropriate modification of the classical translation method by Nirenberg.
      PubDate: 2017-04-01
      DOI: 10.1007/s10231-016-0586-3
      Issue No: Vol. 196, No. 2 (2017)
       
  • On critical exponents for Lane–Emden–Fowler-type equations with a
           singular extremal operator
    • Authors: Osiris González-Melendez; Alexander Quaas
      Pages: 599 - 615
      Abstract: Abstract In this article, we consider the nonlinear elliptic equation Here, \(\mathcal {M^{+}}_{\lambda , \Lambda }\) denotes Pucci’s extremal operator with parameters \(\Lambda \ge \lambda > 0\) and \(-1<\beta <0\) . We prove the existence of a critical exponent \(p^{*}_+\) that determines the range of \(p>1\) for which we have the existence or nonexistence of a positive radial solution to \((\star )\) . In addition, we describe the solution set in terms of the parameter p and find two new critical exponents \(1<p^{*}_{+}<{\tilde{p}}_{\beta }\) for the equation \((\star )\) , where the solution set sharply changes its qualitative properties when the value of p exceeds these critical exponents.
      PubDate: 2017-04-01
      DOI: 10.1007/s10231-016-0588-1
      Issue No: Vol. 196, No. 2 (2017)
       
  • Time periodic traveling curved fronts of bistable reaction–diffusion
           equations in $${\mathbb {R}}^3$$ R 3
    • Authors: Wei-Jie Sheng
      Pages: 617 - 639
      Abstract: Abstract This paper is concerned with the existence and stability of time periodic traveling curved fronts for reaction–diffusion equations with bistable nonlinearity in \({\mathbb {R}}^3\) . We first study the existence and other qualitative properties of time periodic traveling fronts of polyhedral shape. Furthermore, for any given \(g\in C^{\infty }(S^1)\) with \(\min \nolimits _{0\le \theta \le 2\pi }g(\theta )=0\) that gives a convex bounded domain with smooth boundary of positive curvature everywhere, which is included in a sequence of convex polygons, we show that there exists a three-dimensional time periodic traveling front by taking the limit of the solutions corresponding to the convex polyhedrons as the number of the lateral surfaces goes to infinity.
      PubDate: 2017-04-01
      DOI: 10.1007/s10231-016-0589-0
      Issue No: Vol. 196, No. 2 (2017)
       
  • Globally stable quasistatic evolution for strain gradient plasticity
           coupled with damage
    • Authors: Vito Crismale
      Pages: 641 - 685
      Abstract: Abstract We consider evolutions for a material model which couples scalar damage with strain gradient plasticity, in small strain assumptions. For strain gradient plasticity, we follow the Gurtin–Anand formulation (J Mech Phys Solids 53:1624–1649, 2005). The aim of the present model is to account for different phenomena: On the one hand, the elastic stiffness reduces and the plastic yield surface shrinks due to material’s degradation, on the other hand the dislocation density affects the damage growth. The main result of this paper is the existence of a globally stable quasistatic evolution (in the so-called energetic formulation). Furthermore, we study the limit model as the strain gradient terms tend to zero. Under stronger regularity assumptions, we show that the evolutions converge to the ones for the coupled elastoplastic damage model studied in Crismale (ESAIM Control Optim Calc Var 22:883-912, 2016).
      PubDate: 2017-04-01
      DOI: 10.1007/s10231-016-0590-7
      Issue No: Vol. 196, No. 2 (2017)
       
  • Periodic solutions of an asymptotically linear Dirac equation
    • Authors: Yanheng Ding; Xiaoying Liu
      Pages: 717 - 735
      Abstract: Abstract Using the variational method, we investigate periodic solutions of a Dirac equation with asymptotically nonlinearity. The variational setting is established and the existence and multiplicity of periodic solutions are obtained.
      PubDate: 2017-04-01
      DOI: 10.1007/s10231-016-0592-5
      Issue No: Vol. 196, No. 2 (2017)
       
  • A Landau’s theorem in several complex variables
    • Authors: Cinzia Bisi
      Pages: 737 - 742
      Abstract: Abstract In one complex variable, it is well known that if we consider the family of all holomorphic functions on the unit disc that fix the origin and with first derivative equal to 1 at the origin, then there exists a constant \(\rho \) , independent of the functions, such that in the image of the unit disc of any of the functions of the family, there is a disc of universal radius \(\rho \) . This is the so celebrated Landau’s theorem. Many counterexamples to an analogous result in several complex variables exist. In this paper, we introduce a class of holomorphic maps for which one can get a Landau’s theorem and a Brody–Zalcman theorem in several complex variables.
      PubDate: 2017-04-01
      DOI: 10.1007/s10231-016-0593-4
      Issue No: Vol. 196, No. 2 (2017)
       
  • Convolvability and regularization of distributions
    • Authors: C. Bargetz; E. A. Nigsch; N. Ortner
      Abstract: Abstract We apply L. Schwartz’ theory of vector-valued distributions in order to simplify, unify and generalize statements about convolvability of distributions, their regularization properties and topological properties of sets of distributions. The proofs rely on propositions on the multiplication of vector-valued distributions and on the characterization of the spaces \(\mathcal {O}_{M}(E,F)\) and \(\mathcal {O}_{C}'(E,F)\) of multipliers and convolutors for distribution spaces E and F.
      PubDate: 2017-04-26
      DOI: 10.1007/s10231-017-0662-3
       
  • Two-dimensionality of gravity water flows governed by the equatorial f
           -plane approximation
    • Authors: Calin Iulian Martin
      Abstract: Abstract We show that gravity wave trains governed by the equatorial f-plane approximation propagate at the free surface of a rotational water flow of constant vorticity vector \((\Omega _1, \Omega _2, \Omega _3)\) over a flat bed only if the flow is two-dimensional. Owing to the presence of Coriolis effects, our result is also true even if the vorticity vector vanishes. This represents a striking difference when compared with the cases without geophysical effects discussed in Constantin (Europhys Lett 86:29001, 2009, Eur J Mech 30:12–16; 2011) and Martin (J Math Fluid Mech 2016. doi:10.1007/s00021-016-0306-1), where the conclusion about the two-dimensionality of the flow was possible under the assumption of constant nonvanishing vorticity vector. Another upshot is that the only nonzero component of the vorticity that may not vanish is \(\Omega _2\) , that is, the one pointing in the horizontal direction orthogonal to the direction of wave propagation.
      PubDate: 2017-04-22
      DOI: 10.1007/s10231-017-0663-2
       
  • Classification of homogeneous minimal immersions from $$S^2$$ S 2 to
           $${\mathbb {H}}P^n$$ H P n
    • Authors: Jie Fei; Ling He
      Abstract: Abstract In this paper we determine all homogeneous minimal immersions of 2-spheres in quaternionic projective spaces \({\mathbb {H}}P^n\) .
      PubDate: 2017-04-22
      DOI: 10.1007/s10231-017-0661-4
       
  • Partial regularity results for non-autonomous functionals with $$\varPhi
           $$ Φ -growth conditions
    • Authors: Flavia Giannetti; Antonia Passarelli di Napoli; Atsushi Tachikawa
      Abstract: Abstract We prove the partial Hölder continuity of the local minimizers of non-autonomous integral functionals of the type $$\begin{aligned} \int _\varOmega \varPhi \left( \big ( A^{\alpha \beta }_{ij}(x,u) D_iu^\alpha D_ju^\beta \big )^{1/2}\right) \mathrm{d}x, \end{aligned}$$ where \(\varPhi \) is an Orlicz function satisfying both the \(\varDelta _2\) and \(\nabla _2\) conditions and the function \(A(x,s) = \big (A^{\alpha \beta }_{ij}(x,s)\big )\) is uniformly elliptic, bounded and continuous. Assuming in addition that the function \(A(x,s) = \big (A^{\alpha \beta }_{ij}(x,s)\big )\) is Hölder continuous, we prove the partial Hölder continuity also of the gradient of the local minimizers.
      PubDate: 2017-04-13
      DOI: 10.1007/s10231-017-0658-z
       
  • Characterizing spheres and Euclidean spaces by conformal vector fields
    • Authors: Sharief Deshmukh
      Abstract: Abstract It is well known that the Euclidean space \( (R^{n},\left\langle ,\right\rangle )\) , the n-sphere \(S^{n}(c)\) of constant curvature c are examples of spaces admitting many conformal vector fields, and therefore conformal vector fields are used in obtaining characterizations of these spaces. In this paper, we use nontrivial conformal vector fields on a compact and connected Riemannian manifold to characterize the sphere \(S^{n}(c)\) . Also, we use a nontrivial conformal vector field on a complete and connected Riemannian manifold and find characterizations for a Euclidean space \((R^{n},\left\langle ,\right\rangle )\) and the sphere \(S^{n}(c)\) .
      PubDate: 2017-04-06
      DOI: 10.1007/s10231-017-0657-0
       
 
 
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