for Journals by Title or ISSN
for Articles by Keywords
help
  Subjects -> MATHEMATICS (Total: 1040 journals)
    - APPLIED MATHEMATICS (83 journals)
    - GEOMETRY AND TOPOLOGY (23 journals)
    - MATHEMATICS (770 journals)
    - MATHEMATICS (GENERAL) (43 journals)
    - NUMERICAL ANALYSIS (23 journals)
    - PROBABILITIES AND MATH STATISTICS (98 journals)

MATHEMATICS (770 journals)                  1 2 3 4 | Last

Showing 1 - 200 of 538 Journals sorted alphabetically
Abakós     Open Access   (Followers: 5)
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 4)
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: 3)
ACM Transactions on Mathematical Software (TOMS)     Hybrid Journal   (Followers: 6)
ACS Applied Materials & Interfaces     Hybrid Journal   (Followers: 38)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 1)
Acta Mathematica     Hybrid Journal   (Followers: 12)
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: 6)
Acta Mathematica Vietnamica     Hybrid Journal  
Acta Mathematicae Applicatae Sinica, English Series     Hybrid Journal  
Advanced Science Letters     Full-text available via subscription   (Followers: 12)
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 4)
Advances in Calculus of Variations     Hybrid Journal   (Followers: 6)
Advances in Catalysis     Full-text available via subscription   (Followers: 5)
Advances in Complex Systems     Hybrid Journal   (Followers: 9)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 21)
Advances in Decision Sciences     Open Access   (Followers: 3)
Advances in Difference Equations     Open Access   (Followers: 3)
Advances in Fixed Point Theory     Open Access   (Followers: 8)
Advances in Geosciences (ADGEO)     Open Access   (Followers: 17)
Advances in Linear Algebra & Matrix Theory     Open Access   (Followers: 10)
Advances in Materials Science     Open Access   (Followers: 17)
Advances in Mathematical Physics     Open Access   (Followers: 7)
Advances in Mathematics     Full-text available via subscription   (Followers: 15)
Advances in Nonlinear Analysis     Open Access  
Advances in Numerical Analysis     Open Access   (Followers: 7)
Advances in Operations Research     Open Access   (Followers: 12)
Advances in Porous Media     Full-text available via subscription   (Followers: 5)
Advances in Pure and Applied Mathematics     Hybrid Journal   (Followers: 8)
Advances in Pure Mathematics     Open Access   (Followers: 9)
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: 7)
African Journal of Mathematics and Computer Science Research     Open Access   (Followers: 5)
Afrika Matematika     Hybrid Journal   (Followers: 1)
Air, Soil & Water Research     Open Access   (Followers: 13)
AKSIOMA Journal of Mathematics Education     Open Access   (Followers: 2)
Al-Jabar : Jurnal Pendidikan Matematika     Open Access   (Followers: 1)
Algebra and Logic     Hybrid Journal   (Followers: 7)
Algebra Colloquium     Hybrid Journal   (Followers: 4)
Algebra Universalis     Hybrid Journal   (Followers: 2)
Algorithmic Operations Research     Open Access   (Followers: 5)
Algorithms     Open Access   (Followers: 11)
Algorithms Research     Open Access   (Followers: 1)
American Journal of Computational and Applied Mathematics     Open Access   (Followers: 8)
American Journal of Mathematical Analysis     Open Access  
American Journal of Mathematics     Full-text available via subscription   (Followers: 6)
American Journal of Operations Research     Open Access   (Followers: 6)
An International Journal of Optimization and Control: Theories & Applications     Open Access   (Followers: 11)
Anadol University Journal of Science and Technology B : Theoritical Sciences     Open Access  
Analele Universitatii Ovidius Constanta - Seria Matematica     Open Access  
Analysis and Applications     Hybrid Journal   (Followers: 1)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 6)
Analysis Mathematica     Full-text available via subscription  
Analysis. International mathematical journal of analysis and its applications     Hybrid Journal   (Followers: 3)
Annales Mathematicae Silesianae     Open Access   (Followers: 2)
Annales mathématiques du Québec     Hybrid Journal   (Followers: 4)
Annales Universitatis Mariae Curie-Sklodowska, sectio A – Mathematica     Open Access   (Followers: 1)
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica     Open Access  
Annali di Matematica Pura ed Applicata     Hybrid Journal   (Followers: 1)
Annals of Combinatorics     Hybrid Journal   (Followers: 4)
Annals of Data Science     Hybrid Journal   (Followers: 13)
Annals of Discrete Mathematics     Full-text available via subscription   (Followers: 7)
Annals of Mathematics     Full-text available via subscription   (Followers: 2)
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 12)
Annals of PDE     Hybrid Journal  
Annals of Pure and Applied Logic     Open Access   (Followers: 4)
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  
Annals of West University of Timisoara - Mathematics and Computer Science     Open Access   (Followers: 1)
Annuaire du Collège de France     Open Access   (Followers: 6)
ANZIAM Journal     Open Access   (Followers: 1)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 2)
Applications of Mathematics     Hybrid Journal   (Followers: 3)
Applied Categorical Structures     Hybrid Journal   (Followers: 4)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 14)
Applied Mathematics     Open Access   (Followers: 4)
Applied Mathematics     Open Access   (Followers: 8)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 10)
Applied Mathematics - A Journal of Chinese Universities     Hybrid Journal   (Followers: 1)
Applied Mathematics and Nonlinear Sciences     Open Access  
Applied Mathematics Letters     Full-text available via subscription   (Followers: 4)
Applied Mathematics Research eXpress     Hybrid Journal   (Followers: 1)
Applied Network Science     Open Access   (Followers: 3)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 5)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 6)
Arab Journal of Mathematical Sciences     Open Access   (Followers: 4)
Arabian Journal of Mathematics     Open Access   (Followers: 2)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 3)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 6)
Archive of Numerical Software     Open Access  
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 6)
Arkiv för Matematik     Hybrid Journal   (Followers: 1)
Armenian Journal of Mathematics     Open Access   (Followers: 1)
Arnold Mathematical Journal     Hybrid Journal   (Followers: 1)
Artificial Satellites     Open Access   (Followers: 25)
Asia-Pacific Journal of Operational Research     Hybrid Journal   (Followers: 3)
Asian Journal of Algebra     Open Access   (Followers: 1)
Asian-European Journal of Mathematics     Hybrid Journal   (Followers: 3)
Australian Mathematics Teacher, The     Full-text available via subscription   (Followers: 7)
Australian Primary Mathematics Classroom     Full-text available via subscription   (Followers: 5)
Australian Senior Mathematics Journal     Full-text available via subscription   (Followers: 2)
Automatic Documentation and Mathematical Linguistics     Hybrid Journal   (Followers: 5)
Axioms     Open Access   (Followers: 1)
Baltic International Yearbook of Cognition, Logic and Communication     Open Access   (Followers: 1)
Basin Research     Hybrid Journal   (Followers: 5)
BIBECHANA     Open Access   (Followers: 2)
Biomath     Open Access  
BIT Numerical Mathematics     Hybrid Journal   (Followers: 1)
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: 2)
British Journal of Mathematical and Statistical Psychology     Full-text available via subscription   (Followers: 20)
Bruno Pini Mathematical Analysis Seminar     Open Access  
Buletinul Academiei de Stiinte a Republicii Moldova. Matematica     Open Access   (Followers: 13)
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: 3)
Bulletin of Mathematical Sciences     Open Access   (Followers: 1)
Bulletin of Symbolic Logic     Full-text available via subscription   (Followers: 2)
Bulletin of the Australian Mathematical Society     Full-text available via subscription   (Followers: 2)
Bulletin of the Brazilian Mathematical Society, New Series     Hybrid Journal  
Bulletin of the Iranian Mathematical Society     Hybrid Journal  
Bulletin of the London Mathematical Society     Hybrid Journal   (Followers: 3)
Bulletin of the Malaysian Mathematical Sciences Society     Hybrid Journal  
Calculus of Variations and Partial Differential Equations     Hybrid Journal  
Canadian Journal of Mathematics / Journal canadien de mathématiques     Hybrid Journal  
Canadian Journal of Science, Mathematics and Technology Education     Hybrid Journal   (Followers: 20)
Canadian Mathematical Bulletin     Hybrid Journal  
Carpathian Mathematical Publications     Open Access   (Followers: 1)
Catalysis in Industry     Hybrid Journal   (Followers: 1)
CEAS Space Journal     Hybrid Journal   (Followers: 2)
CHANCE     Hybrid Journal   (Followers: 5)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 3)
Chaos, Solitons & Fractals : X     Open Access  
ChemSusChem     Hybrid Journal   (Followers: 8)
Chinese Annals of Mathematics, Series B     Hybrid Journal  
Chinese Journal of Catalysis     Full-text available via subscription   (Followers: 2)
Chinese Journal of Mathematics     Open Access  
Clean Air Journal     Full-text available via subscription   (Followers: 1)
Cogent Mathematics     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 3)
Collectanea Mathematica     Hybrid Journal  
COMBINATORICA     Hybrid Journal  
Combinatorics, Probability and Computing     Hybrid Journal   (Followers: 4)
Combustion Theory and Modelling     Hybrid Journal   (Followers: 15)
Commentarii Mathematici Helvetici     Hybrid Journal  
Communications in Advanced Mathematical Sciences     Open Access  
Communications in Combinatorics and Optimization     Open Access  
Communications in Contemporary Mathematics     Hybrid Journal  
Communications in Mathematical Physics     Hybrid Journal   (Followers: 4)
Communications On Pure & Applied Mathematics     Hybrid Journal   (Followers: 4)
Complex Analysis and its Synergies     Open Access   (Followers: 3)
Complex Variables and Elliptic Equations: An International Journal     Hybrid Journal  
Composite Materials Series     Full-text available via subscription   (Followers: 9)
Compositio Mathematica     Full-text available via subscription  
Comptes Rendus Mathematique     Full-text available via subscription  
Computational and Applied Mathematics     Hybrid Journal   (Followers: 4)
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: 10)
Computational Mechanics     Hybrid Journal   (Followers: 5)
Computational Methods and Function Theory     Hybrid Journal  
Computational Optimization and Applications     Hybrid Journal   (Followers: 8)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 11)
Concrete Operators     Open Access   (Followers: 5)
Confluentes Mathematici     Hybrid Journal  
Contributions to Game Theory and Management     Open Access  
COSMOS     Hybrid Journal  
Cryptography and Communications     Hybrid Journal   (Followers: 13)
Cuadernos de Investigación y Formación en Educación Matemática     Open Access  
Cubo. A Mathematical Journal     Open Access  
Current Research in Biostatistics     Open Access   (Followers: 8)
Czechoslovak Mathematical Journal     Hybrid Journal   (Followers: 1)
Demographic Research     Open Access   (Followers: 15)
Demonstratio Mathematica     Open Access  
Dependence Modeling     Open Access  
Design Journal : An International Journal for All Aspects of Design     Hybrid Journal   (Followers: 31)
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: 4)
Differentsial'nye Uravneniya     Open Access  
Digital Experiences in Mathematics Education     Hybrid Journal  
Discrete Mathematics     Hybrid Journal   (Followers: 8)
Discrete Mathematics & Theoretical Computer Science     Open Access  
Discrete Mathematics, Algorithms and Applications     Hybrid Journal   (Followers: 2)
Discussiones Mathematicae - General Algebra and Applications     Open Access  
Discussiones Mathematicae Graph Theory     Open Access   (Followers: 2)
Diskretnaya Matematika     Full-text available via subscription  
Dnipropetrovsk University Mathematics Bulletin     Open Access  
Doklady Akademii Nauk     Open Access  
Doklady Mathematics     Hybrid Journal  

        1 2 3 4 | Last

Similar Journals
Journal Cover
Canadian Mathematical Bulletin
Number of Followers: 0  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 00084395 - ISSN (Online) 14964287
Published by Cambridge University Press Homepage  [387 journals]
  • BCM volume 62 Issue 4 Cover and Front matter
    • Pages: 1 - 2
      PubDate: 2019-11-07
      DOI: 10.4153/S0008439519000584
       
  • BCM volume 62 Issue 4 Cover and Back matter
    • Pages: 1 - 2
      PubDate: 2019-11-07
      DOI: 10.4153/S0008439519000596
       
  • On Differential Torsion Theories and Rings with Several Objects
    • Authors: Banerjee; Abhishek
      Pages: 703 - 714
      Abstract: Let be a small preadditive category, viewed as a “ring with several objects.” A right -module is an additive functor from to the category of abelian groups. We show that every hereditary torsion theory on the category of right -modules must be differential.
      PubDate: 2019-04-08
      DOI: 10.4153/S0008439518000656
       
  • Topological Properties of a Class of Higher-dimensional Self-affine Tiles
    • Authors: Deng; Guotai, Liu, Chuntai, Ngai, Sze-Man
      Pages: 727 - 740
      Abstract: We construct a family of self-affine tiles in ( ) with noncollinear digit sets, which naturally generalizes a class studied originally by Q.-R. Deng and K.-S. Lau in , and its extension to by the authors. We obtain necessary and sufficient conditions for the tiles to be connected and for their interiors to be contractible.
      PubDate: 2019-05-03
      DOI: 10.4153/S0008439519000237
       
  • Universal Entire Functions That Define Order Isomorphisms of Countable
           Real Sets
    • Authors: Gauthier P. M.
      Pages: 767 - 779
      Abstract: In 1895, Cantor showed that between every two countable dense real sets, there is an order isomorphism. In fact, there is always such an order isomorphism that is the restriction of a universal entire function.
      PubDate: 2019-04-10
      DOI: 10.4153/S0008439519000158
       
  • Perturbation Analysis of Orthogonal Least Squares
    • Authors: Geng; Pengbo, Chen, Wengu, Ge, Huanmin
      Pages: 780 - 797
      Abstract: The Orthogonal Least Squares (OLS) algorithm is an efficient sparse recovery algorithm that has received much attention in recent years. On one hand, this paper considers that the OLS algorithm recovers the supports of sparse signals in the noisy case. We show that the OLS algorithm exactly recovers the support of -sparse signal from in iterations, provided that the sensing matrix satisfies the restricted isometry property (RIP) with restricted isometry constant (RIC) , and the minimum magnitude of the nonzero elements of satisfies some constraint. On the other hand, this paper demonstrates that the OLS algorithm exactly recovers the support of the best -term approximation of an almost sparse signal in the general perturbations case, which means both and are perturbed. We show that the support of the best ...
      PubDate: 2019-03-22
      DOI: 10.4153/S0008439519000134
       
  • Rings whose Elements are the Sum of a Tripotent and an Element from the
           Jacobson Radical
    • Authors: Koşan; M. Tamer, Yildirim, Tülay, Zhou, Y.
      Pages: 810 - 821
      Abstract: This paper is about rings for which every element is a sum of a tripotent and an element from the Jacobson radical . These rings are called semi-tripotent rings. Examples include Boolean rings, strongly nil-clean rings, strongly 2-nil-clean rings, and semi-boolean rings. Here, many characterizations of semi-tripotent rings are obtained. Necessary and sufficient conditions for a Morita context (respectively, for a group ring of an abelian group or a locally finite nilpotent group) to be semi-tripotent are proved.
      PubDate: 2019-03-15
      DOI: 10.4153/S0008439519000092
       
  • Einstein–Maxwell Equations on Four-dimensional Lie Algebras
    • Authors: Koca; Caner, Lejmi, Mehdi
      Pages: 822 - 840
      Abstract: We classify up to automorphisms all left-invariant non-Einstein solutions to the Einstein–Maxwell equations on four-dimensional Lie algebras.
      PubDate: 2019-05-09
      DOI: 10.4153/S0008439519000249
       
  • The Shifted Turán Sieve Method on Tournaments
    • Authors: Kuo; Wentang, Liu, Yu-Ru, Ribas, Sávio, Zhou, Kevin
      Pages: 841 - 855
      Abstract: We construct a shifted version of the Turán sieve method developed by R. Murty and the second author and apply it to counting problems on tournaments. More precisely, we obtain upper bounds for the number of tournaments which contain a fixed number of restricted -cycles. These are the first concrete results which count the number of cycles over “all tournaments”.
      PubDate: 2019-04-11
      DOI: 10.4153/S000843951900016X
       
  • Chains of P-points
    • Authors: Raghavan; Dilip, Verner, Jonathan L.
      Pages: 856 - 868
      Abstract: It is proved that the Continuum Hypothesis implies that any sequence of rapid P-points of length that is increasing with respect to the Rudin–Keisler ordering is bounded above by a rapid P-point. This is an improvement of a result from B. Kuzeljevic and D. Raghavan. It is also proved that Jensen’s diamond principle implies the existence of an unbounded strictly increasing sequence of P-points of length in the Rudin–Keisler ordering. This shows that restricting to the class of rapid P-points is essential for the first result.
      PubDate: 2019-02-18
      DOI: 10.4153/S0008439519000043
       
  • Büchi’s Problem in Modular Arithmetic for Arbitrary Quadratic
           Polynomials
    • Authors: Sáez; Pablo, Vidaux, Xavier, Vsemirnov, Maxim
      Pages: 876 - 885
      Abstract: Given a prime and an integer , we show that there exists an integer such that for any quadratic polynomial with coefficients in the ring of integers modulo , such that is not a square, if a sequence is a sequence of squares, then is at most . We also provide some explicit formulas for the optimal .
      PubDate: 2019-04-26
      DOI: 10.4153/S0008439519000225
       
  • Linear Conjugacy
    • Authors: Steinberg; Benjamin
      Pages: 886 - 895
      Abstract: We say that two elements of a group or semigroup are -linear conjugates if their images under any linear representation over are conjugate matrices. In this paper we characterize -linear conjugacy for finite semigroups (and, in particular, for finite groups) over an arbitrary field  .
      PubDate: 2019-01-29
      DOI: 10.4153/S0008439519000031
       
  • Well-posedness of Third Order Differential Equations in Hölder
           Continuous Function Spaces
    • Authors: Bu; Shangquan, Cai, Gang
      Pages: 715 - 726
      Abstract: In this paper, by using operator-valued -Fourier multiplier results on vector-valued Hölder continuous function spaces, we give a characterization of the -well-posedness for the third order differential equations , ( ), where are closed linear operators on a Banach space such that , and .
      PubDate: 2018-10-15
      DOI: 10.4153/S0008439518000048
       
  • Diameter, Decomposability, and Minkowski Sums of Polytopes
    • Authors: Deza; Antoine, Pournin, Lionel
      Pages: 741 - 755
      Abstract: We investigate how the Minkowski sum of two polytopes affects their graph and, in particular, their diameter. We show that the diameter of the Minkowski sum is bounded below by the diameter of each summand and above by, roughly, the product between the diameter of one summand and the number of vertices of the other. We also prove that both bounds are sharp. In addition, we obtain a result on polytope decomposability. More precisely, given two polytopes and  , we show that can be written as a Minkowski sum with a summand homothetic to if and only if has the same number of vertices as its Minkowski sum with  .
      PubDate: 2018-12-17
      DOI: 10.4153/S0008439518000668
       
  • Simplicial (Co)-homology of $\ell ^{1}(\mathbb{Z}_{+})$
    • Authors: Farhat; Yasser, Gourdeau, Frédéric
      Pages: 756 - 766
      Abstract: We consider the unital Banach algebra and prove directly, without using cyclic cohomology, that the simplicial cohomology groups vanish for all . This proceeds via the introduction of an explicit bounded linear operator which produces a contracting homotopy for . This construction is generalised to unital Banach algebras , where and is a subgroup of  .
      PubDate: 2018-12-17
      DOI: 10.4153/S0008439518000644
       
  • Sidon Sets are Proportionally Sidon with Small Sidon Constants
    • Authors: Hare; Kathryn E., Yang, Robert (Xu)
      Pages: 798 - 809
      Abstract: In his seminal work on Sidon sets, Pisier found an important characterization of Sidonicity: A set is Sidon if and only if it is proportionally quasi-independent. Later, it was shown that Sidon sets were proportionally “special” Sidon in several other ways. Here, we prove that Sidon sets in torsion-free groups are proportionally -degree independent, a higher order of independence than quasi-independence, and we use this to prove that Sidon sets are proportionally Sidon with Sidon constants arbitrarily close to one, the minimum possible value.
      PubDate: 2018-12-11
      DOI: 10.4153/S0008439518000620
       
  • Numbers with Almost all Convergents in a Cantor Set
    • Authors: Roy; Damien, Schleischitz, Johannes
      Pages: 869 - 875
      Abstract: In 1984, K. Mahler asked how well elements in the Cantor middle third set can be approximated by rational numbers from that set and by rational numbers outside of that set. We consider more general missing digit sets and construct numbers in that are arbitrarily well approximable by rationals in  , but badly approximable by rationals outside of  . More precisely, we construct them so that all but finitely many of their convergents lie in  .
      PubDate: 2018-12-03
      DOI: 10.4153/S0008439518000450
       
  • On Knörrer Periodicity for Quadric Hypersurfaces in Skew Projective
           Spaces
    • Authors: Ueyama; Kenta
      Pages: 896 - 911
      Abstract: We study the structure of the stable category of graded maximal Cohen–Macaulay module over where is a graded ( )-skew polynomial algebra in variables of degree 1, and . If is commutative, then the structure of is well known by Knörrer’s periodicity theorem. In this paper, we prove that if , then the structure of is determined by the number of irreducible components of the point scheme of which are isomorphic to .
      PubDate: 2018-12-03
      DOI: 10.4153/S0008439518000607
       
  • Ricci Solitons on Almost Co-Kähler Manifolds
    • Authors: Wang; Yaning
      Pages: 912 - 922
      Abstract: In this paper, we prove that if an almost co-Kähler manifold of dimension greater than three satisfying -Einstein condition with constant coefficients is a Ricci soliton with potential vector field being of constant length, then either the manifold is Einstein or the Reeb vector field is parallel. Let be a non-co-Kähler almost co-Kähler 3-manifold such that the Reeb vector field is an eigenvector field of the Ricci operator. If is a Ricci soliton with transversal potential vector field, then it is locally isometric to Lie group of rigid motions of the Minkowski 2-space.
      PubDate: 2018-12-07
      DOI: 10.4153/S0008439518000632
       
  • Multiple Lattice Tilings in Euclidean Spaces
    • Authors: Yang; Qi, Zong, Chuanming
      Pages: 923 - 929
      Abstract: In 1885, Fedorov discovered that a convex domain can form a lattice tiling of the Euclidean plane if and only if it is a parallelogram or a centrally symmetric hexagon. This paper proves the following results. Except for parallelograms and centrally symmetric hexagons, there are no other convex domains that can form two-, three- or four-fold lattice tilings in the Euclidean plane. However, there are both octagons and decagons that can form five-fold lattice tilings. Whenever , there are non-parallelohedral polytopes that can form five-fold lattice tilings in the -dimensional Euclidean space.
      PubDate: 2018-11-16
      DOI: 10.4153/S0008439518000103
       
 
 
JournalTOCs
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762
Fax: +00 44 (0)131 4513327
 
Home (Search)
Subjects A-Z
Publishers A-Z
Customise
APIs
Your IP address: 35.172.195.49
 
About JournalTOCs
API
Help
News (blog, publications)
JournalTOCs on Twitter   JournalTOCs on Facebook

JournalTOCs © 2009-