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  Subjects -> MATHEMATICS (Total: 874 journals)
    - APPLIED MATHEMATICS (71 journals)
    - GEOMETRY AND TOPOLOGY (19 journals)
    - MATHEMATICS (647 journals)
    - MATHEMATICS (GENERAL) (41 journals)
    - NUMERICAL ANALYSIS (19 journals)
    - PROBABILITIES AND MATH STATISTICS (77 journals)

MATHEMATICS (647 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: 7)
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: 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: 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: 6)
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: 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 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: 18)
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: 17)
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: 12)
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: 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)

        1 2 3 4 | Last

Journal Cover Boletín de la Sociedad Matemática Mexicana
  [SJR: 0.11]   [H-I: 11]   [0 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1405-213X - ISSN (Online) 2296-4495
   Published by Springer-Verlag Homepage  [2345 journals]
  • Spheroidal groups, virtual cohomology and lower dimensional G -spaces
    • Authors: William Browder
      Pages: 75 - 78
      Abstract: A space is defined to be “n-spheroidal” if it has the homotopy type of an n-dimensional CW-complex X with \(H_{n}(X; \mathbb {Z})\) not zero and finitely generated. A group G is called “n-spheroidal” if its classifying space K(G, 1) is n-spheroidal. Examples include fundamental groups of compact manifold K(G, 1)s. Moreover, the class of groups G, which are n-spheroidal for some n, is closed under products, free products, and group extensions. If Y is a space with \(\pi _{1}(Y)\) n-spheroidal, and if \(H_{k}(Y;\mathbb {F}_{p})\) is non-zero and finitely generated, and if \(H_{i}(Y;\mathbb {F}_{p}) = 0\) for \(i>k\) , then \(H_{n+k}(\overline{Y};\mathbb {F}_{p}) \ne 0\) for \(\overline{Y}\) a finite sheeted covering space of Y. Hence, dim \((Y) \ge n+k\) . Thus, it follows that if dim \((Y) < n\) , and if \(H_{k}(Y;\mathbb {F}_{p}) \ne 0\) and \(H_{i}(Y;\mathbb {F}_{p}) = 0\) for \(i>k>0\) , then \(H_{k}(Y;\mathbb {F}_{p})\) is not finitely generated. Similar results follow for \(Y\subset K(G,1)\) .
      PubDate: 2017-04-01
      DOI: 10.1007/s40590-016-0137-3
      Issue No: Vol. 23, No. 1 (2017)
       
  • Intercalate coloring of matrices and the Yuzvinsky Conjecture
    • Authors: Kee Yuen Lam
      Pages: 79 - 86
      Abstract: This paper is a summary of my talk given at the event “Sam 80” which was a meeting held at El Colegio Nacional in Mexico (2013) to celebrate Professor Samuel Gitler’s 80th birthday. The main purpose of that talk was to present an affirmative answer to the Yuzvinsky Conjecture in the case of square matrices (explained below). I would like to dedicate this write-up to Sam’s memory, to express my appreciation for his warm friendship throughout our 46 years of acquaintance.
      PubDate: 2017-04-01
      DOI: 10.1007/s40590-016-0130-x
      Issue No: Vol. 23, No. 1 (2017)
       
  • Topological rigidity of higher graph manifolds
    • Authors: Noé Bárcenas; Daniel Juan-Pineda; Pablo Suárez-Serrato
      Pages: 119 - 127
      Abstract: In this short note we prove the Borel conjecture for a family of aspherical manifolds that includes higher graph manifolds.
      PubDate: 2017-04-01
      DOI: 10.1007/s40590-016-0099-5
      Issue No: Vol. 23, No. 1 (2017)
       
  • Topological complexity of some planar polygon spaces
    • Authors: Donald M. Davis
      Pages: 129 - 139
      Abstract: Let \({\overline{M}}_{n,r}\) denote the space of isometry classes of n-gons in the plane with one side of length r and all others of length 1, and assume that \(1\le r<n-3\) and \(n-r\) is not an odd integer. Using known results about the mod-2 cohomology ring, we prove that its topological complexity satisfies \({\text {TC}}({\overline{M}}_{n,r})\ge 2n-6\) . Since \({\overline{M}}_{n,r}\) is an \((n-3)\) -manifold, \({\text {TC}}({\overline{M}}_{n,r})\le 2n-5\) . So our result is within 1 of being optimal.
      PubDate: 2017-04-01
      DOI: 10.1007/s40590-016-0093-y
      Issue No: Vol. 23, No. 1 (2017)
       
  • Homotopy decomposition of a suspended real toric space
    • Authors: Suyoung Choi; Shizuo Kaji; Stephen Theriault
      Pages: 153 - 161
      Abstract: We give p-local homotopy decompositions of the suspensions of real toric spaces for odd primes p. Our decomposition is compatible with the one given by Bahri, Bendersky, Cohen, and Gitler for the suspension of the corresponding real moment-angle complex, or more generally, the polyhedral product. As an application, we obtain a stable rigidity property for real toric spaces.
      PubDate: 2017-04-01
      DOI: 10.1007/s40590-016-0090-1
      Issue No: Vol. 23, No. 1 (2017)
       
  • Homotopy automorphisms of R -module bundles, and the K -theory of string
           topology
    • Authors: Ralph L. Cohen; John D. S Jones
      Pages: 163 - 172
      Abstract: Let R be a ring spectrum and \( \mathcal {E}\rightarrow X\) an R-module bundle of rank n. Our main result is to identify the homotopy type of the group-like monoid of homotopy automorphisms of this bundle, \(hAut^R(\mathcal {E})\) . This will generalize the result regarding R-line bundles proven by Cohen and Jones (Mex Bull Math, 2016). The main application is the calculation of the homotopy type of \(BGL_n(End ((\mathcal {L}))\) where \(\mathcal {L}\rightarrow X\) is any R-line bundle, and \(End^R(\mathcal {L})\) is the ring spectrum of endomorphisms. In the case when such a bundle is the fiberwise suspension spectrum of a principal bundle over a manifold, \(G \rightarrow P \rightarrow M\) , this leads to a description of the K-theory of the string topology spectrum in terms of the mapping space from M to \(BGL \left( \Sigma ^\infty (G_+)\right) \) .
      PubDate: 2017-04-01
      DOI: 10.1007/s40590-016-0136-4
      Issue No: Vol. 23, No. 1 (2017)
       
  • $$\mathcal {E}_\infty $$ E ∞ ring spectra and elements of Hopf
           invariant 1
    • Authors: Andrew Baker
      Pages: 195 - 231
      Abstract: The 2-primary Hopf invariant 1 elements in the stable homotopy groups of spheres form the most accessible family of elements. In this paper, we explore some properties of the \(\mathcal {E}_\infty \) ring spectra obtained from certain iterated mapping cones by applying the free algebra functor. In fact, these are equivalent to Thom spectra over infinite loop spaces related to the classifying spaces \(B\mathrm {SO},\,B\mathrm {Spin},\,B\mathrm {String}\) . We show that the homology of these Thom spectra are all extended comodule algebras of the form \(\mathcal {A}_*\square _{\mathcal {A}(r)_*}P_*\) over the dual Steenrod algebra \(\mathcal {A}_*\) with \(\mathcal {A}_*\square _{\mathcal {A}(r)_*}\mathbb {F}_2\) as an algebra retract. This suggests that these spectra might be wedges of module spectra over the ring spectra \(H\mathbb {Z}\) , \(k\mathrm {O}\) or \(\mathrm {tmf}\) ; however, apart from the first case, we have no concrete results on this.
      PubDate: 2017-04-01
      DOI: 10.1007/s40590-016-0096-8
      Issue No: Vol. 23, No. 1 (2017)
       
  • On the free loop spaces of a toric space
    • Authors: A. Bahri; M. Bendersky; F. R. Cohen; S. Gitler
      Pages: 257 - 265
      Abstract: In this note, it is shown that the Hilbert–Poincaré series for the rational homology of the free loop space on a moment-angle complex is a rational function if and only if the moment-angle complex is a product of odd spheres and a disk. A partial result is included for the Davis–Januszkiewicz spaces. The opportunity is taken to correct the result (Bahri et al., Proceedings of the Steklov Institute of Mathematics, Russian Academy of Sciences, vol. 286, pp. 219–223. doi:10.1134/S0081543814060121, 2014) which used a theorem from Berglund and Jöllenbeck (J Algebra 315:249–273, 2007).
      PubDate: 2017-04-01
      DOI: 10.1007/s40590-016-0124-8
      Issue No: Vol. 23, No. 1 (2017)
       
  • The structure of motivic homotopy groups
    • Authors: Bogdan Gheorghe; Daniel C. Isaksen
      Pages: 389 - 397
      Abstract: We study the stable motivic homotopy groups \(\pi _{s,w}\) of the 2-completion of the motivic sphere spectrum over \(\mathbb {C}\) . When arranged in the (s, w)-plane, these groups break into four different regions: a vanishing region, an \(\eta \) -local region that is entirely known, a \(\tau \) -local region that is identical to classical stable homotopy groups, and a region that is not well-understood.
      PubDate: 2017-04-01
      DOI: 10.1007/s40590-016-0094-x
      Issue No: Vol. 23, No. 1 (2017)
       
  • Pure vertex decomposable simplicial complex associated to graphs whose
           5-cycles are chorded
    • Authors: Iván D. Castrillón; Enrique Reyes
      Pages: 399 - 412
      Abstract: If a simplicial complex \(\Delta \) is vertex decomposable, then the n-sphere moment angle complex \(\mathcal {Z}_{\Delta ^{\vee }}(D^{n},S^{n-1})\) has the homotopy type of the wedges of spheres, where \(\Delta ^{\vee }\) is the Alexander dual of \(\Delta \) . Furthermore, if \(\Delta \) is pure vertex decomposable, then its Stanley–Reisner ring \(k[\Delta ]\) is Cohen–Macaulay. Consequently, the vertex decomposable property is an interesting property from combinatorial, algebraic and topological point of view. In this paper, we characterize the pure vertex decomposable simplicial complexes associated to graphs whose 5-cycles have at least 4 chords.
      PubDate: 2017-04-01
      DOI: 10.1007/s40590-016-0147-1
      Issue No: Vol. 23, No. 1 (2017)
       
  • Topological model for $$h^{\prime \prime }$$ h ″ vectors of simplicial
           manifolds
    • Authors: Anton Ayzenberg
      Pages: 413 - 421
      Abstract: Given a simplicial poset S, whose geometrical realization is a closed orientable homology manifold, Novik and Swartz introduced a Poincare duality algebra \((\mathcal {R}[S]/(l.s.o.p.))/I_{NS}\) , which is a quotient of the face ring of the poset S. The ranks of graded components of this algebra are now called \(h''\) numbers of S and can be computed from face numbers and Betti numbers of S. We introduce a topological model for this Poincare duality algebra. Given an \((n-1)\) -dimensional simplicial homology manifold S, we construct a 2n-dimensional homology manifold with boundary \(\widehat{X}\) carrying the action of a compact n torus. The Poincare–Lefschetz duality on \(\widehat{X}\) is used to reconstruct the algebra \((\mathcal {R}[S]/(l.s.o.p.))/I_{NS}\) .
      PubDate: 2017-04-01
      DOI: 10.1007/s40590-016-0135-5
      Issue No: Vol. 23, No. 1 (2017)
       
  • Equivariantly homeomorphic quasitoric manifolds are diffeomorphic
    • Authors: Michael Wiemeler
      Pages: 501 - 509
      Abstract: In this note we prove that equivariantly homeomorphic quasitoric manifolds are diffeomorphic. As a consequence we show that up to finite ambiguity the diffeomorphism type of certain quasitoric manifolds M is determined by their cohomology rings and first Pontrjagin classes.
      PubDate: 2017-04-01
      DOI: 10.1007/s40590-016-0091-0
      Issue No: Vol. 23, No. 1 (2017)
       
  • Models for classifying spaces for $${\mathbb {Z}\rtimes \mathbb {Z}}$$ Z
           ⋊ Z
    • Abstract: We construct two models for the classifying space for the family of infinite cyclic subgroups of the fundamental group of the Klein bottle. These examples do not fit in general constructions previously done, for example, for hyperbolic groups.
      PubDate: 2017-06-22
       
  • Recent studies on boundary value problems for impulsive fractional
           differential systems involving Caputo fractional derivatives
    • Authors: Yuji Liu; Patricia J. Y. Wong
      Abstract: We present a new method to convert the boundary value problems for impulsive fractional differential equations involving Caputo fractional derivatives to integral equations. This method is used to solve a classes of boundary value problems for impulsive fractional differential equations. Moreover, some new results on the existence of solutions of anti-periodic boundary value problems for impulsive fractional differential systems are established (see Sect. 3). Our analysis relies on the well known Schauder’s fixed point theorem. Some examples and comments on recent published papers are given to illustrate the differences between our main theorems and known results.
      PubDate: 2017-06-08
      DOI: 10.1007/s40590-017-0170-x
       
  • A Radó theorem for the porous medium equation
    • Authors: Dmitry Fedchenko; Nikolai Tarkhanov
      Abstract: We prove that if u is a locally Lipschitz continuous function on an open set \(\mathcal {X} \subset \mathbb {R}^{n+1}\) satisfying the nonlinear heat equation \(\partial _t u = \Delta ( u ^{p-1} u)\) , \(p > 1\) , weakly away from the zero set \(u^{-1} (0)\) in \(\mathcal {X}\) , then u is a weak solution to this equation in all of \(\mathcal {X}\) .
      PubDate: 2017-06-03
      DOI: 10.1007/s40590-017-0169-3
       
  • A measure theoretic perspective on the space of Feynman diagrams
    • Authors: Ali Shojaei-Fard
      Abstract: The article applies Connes–Kreimer Hopf algebra of Feynman diagrams and theory of graphons to build an operational calculus machinery on the basis of measure theory for Green’s functions of quantum field theory.
      PubDate: 2017-05-10
      DOI: 10.1007/s40590-017-0166-6
       
  • The solution of a generalized variant of d’Alembert’s
           functional equation
    • Authors: Iz-iddine EL-Fassi; Abdellatif Chahbi; Samir Kabbaj
      Abstract: Let \((S,\cdot )\) be a semigroup, \(\mathbb {C}\) be the set of complex numbers, and let \(\sigma ,\tau \in Hom(S,S)\) satisfy \(\tau \circ \tau =\sigma \circ \sigma =id.\) We show that any solution \(f:S \rightarrow \mathbb {C}\) of the functional equation $$\begin{aligned} f(x\sigma (y))+\chi (y)f(\tau (y)x)=2f(x)f(y), \quad x,y \in S, \end{aligned}$$ has the form \(f=(m+\chi \, m\circ \sigma \circ \tau )/2\) , where m is a multiplicative function on S and \(\chi :S\rightarrow (\mathbb {C}\backslash \{0\},\cdot )\) is a character on S (i.e., \(\chi (xy)=\chi (x)\chi (y)\) for all \(x,y\in S\) ) which satisfies \(\chi (x\tau (x))=1\) for all \(x\in S\) .
      PubDate: 2017-05-09
      DOI: 10.1007/s40590-017-0168-4
       
  • Fractional integral operators involving extended Mittag–Leffler
           function as its Kernel
    • Authors: Gauhar Rahman; Praveen Agarwal; Shahid Mubeen; Muhammad Arshad
      Abstract: This paper is devoted to the study of fractional calculus with an integral and differential operators containing the following family of extended Mittag–Leffler function: $$\begin{aligned} E_{\alpha ,\beta }^{\gamma ;c}(z; p)=\sum \limits _{n=0}^{\infty }\frac{B_p(\gamma +n, c-\gamma )(c)_{n}}{B(\gamma , c-\gamma )\Gamma (\alpha n+\beta )}\frac{z^n}{n!}, (z,\beta , \gamma \in \mathbb {C}), \end{aligned}$$ in its kernel. Also, we further introduce a certain number of consequences of fractional integral and differential operators containing the said function in their kernels.
      PubDate: 2017-04-25
      DOI: 10.1007/s40590-017-0167-5
       
  • Samuel Gitler and his influence
    • Authors: Ernesto Lupercio; Elias Micha
      Abstract: In his note we briefly analyze the rôle of the oeuvre of Mexican mathematician Samuel Gitler and his influence in twentieth and twenty-first century mathematics.
      PubDate: 2017-03-11
      DOI: 10.1007/s40590-017-0163-9
       
  • Determination of the 2-primary components of the 32-stem homotopy groups
           of $$S^n$$ S n
    • Abstract: We determine the 2-primary components of the 32-stem homotopy groups of spheres. The method is based on the classical one including the Toda’s composition methods.
      PubDate: 2016-11-04
      DOI: 10.1007/s40590-016-0154-2
       
 
 
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