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  Subjects -> MATHEMATICS (Total: 886 journals)
    - APPLIED MATHEMATICS (72 journals)
    - GEOMETRY AND TOPOLOGY (20 journals)
    - MATHEMATICS (656 journals)
    - MATHEMATICS (GENERAL) (42 journals)
    - NUMERICAL ANALYSIS (19 journals)
    - PROBABILITIES AND MATH STATISTICS (77 journals)

MATHEMATICS (656 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: 3)
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: 22)
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: 8)
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: 5)
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: 2)
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: 6)
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: 8)
AKSIOMA Journal of Mathematics Education     Open Access   (Followers: 1)
Al-Jabar : Jurnal Pendidikan Matematika     Open Access  
Algebra and Logic     Hybrid Journal   (Followers: 4)
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: 11)
Algorithms Research     Open Access   (Followers: 1)
American Journal of Biostatistics     Open Access   (Followers: 9)
American Journal of Computational and Applied Mathematics     Open Access   (Followers: 4)
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: 9)
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   (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: 3)
Arabian Journal of Mathematics     Open Access   (Followers: 2)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 1)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 5)
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: 20)
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: 5)
BIBECHANA     Open Access   (Followers: 1)
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: 20)
Bruno Pini Mathematical Analysis Seminar     Open Access  
Buletinul Academiei de Stiinte a Republicii Moldova. Matematica     Open Access   (Followers: 8)
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: 20)
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: 3)
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: 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: 8)
Discrete Mathematics & Theoretical Computer Science     Open Access  
Discrete Mathematics, Algorithms and Applications     Hybrid Journal   (Followers: 2)
Discussiones Mathematicae Graph Theory     Open Access   (Followers: 1)
Dnipropetrovsk University Mathematics Bulletin     Open Access  
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: 5)
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)

        1 2 3 4 | Last

Journal Cover Bulletin of the Malaysian Mathematical Sciences Society
  [SJR: 0.614]   [H-I: 14]   [0 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 0126-6705 - ISSN (Online) 2180-4206
   Published by Springer-Verlag Homepage  [2352 journals]
  • Normal Criteria for Family Meromorphic Functions Sharing Holomorphic
           Function
    • Authors: Nguyen Van Thin
      Pages: 1413 - 1442
      Abstract: Abstract In this paper, we study the value distribution of differential polynomial with the form \(f^n(f^{n_1})^{(t_1)}\dots (f^{n_k})^{(t_k)},\) where f is a transcendental meromorphic function. Namely, we prove that \(f^n(f^{n_1})^{(t_1)}\dots (f^{n_k})^{(t_k)}-P(z)\) has infinitely zeros, where P(z) is a nonconstant polynomial and \(n\in {\mathbb {N}},\) \(k, n_1, \dots , n_k, t_1, \dots , t_k\) are positive integer numbers satisfying \(n+\sum _{v}^{k}n_v\ge \sum _{v=1}^{k}t_v+3.\) Using it, we establish some normality criterias for family of meromorphic functions under a condition where differential polynomials generated by the members of the family share a holomorphic function with zero points. Our results generalize some previous results on normal family of meromorphic functions.
      PubDate: 2017-10-01
      DOI: 10.1007/s40840-017-0492-x
      Issue No: Vol. 40, No. 4 (2017)
       
  • Mixed Roman Domination in Graphs
    • Authors: H. Abdollahzadeh Ahangar; Teresa W. Haynes; J. C. Valenzuela-Tripodoro
      Pages: 1443 - 1454
      Abstract: Abstract Let \(G = (V, E)\) be a simple graph with vertex set V and edge set E. A mixed Roman dominating function (MRDF) of G is a function \(f: V\cup E\rightarrow \{0,1,2\}\) satisfying the condition every element \(x\in V\cup E\) for which \(f(x)= 0\) is adjacent or incident to at least one element \(y\in V\cup E\) for which \(f(y) = 2\) . The weight of a MRDF f is \(\omega (f)=\sum _{x\in V\cup E}f(x)\) . The mixed Roman domination number of G is the minimum weight of a mixed Roman dominating function of G. In this paper, we initiate the study of the mixed Roman domination number and we present bounds for this parameter. We characterize the graphs attaining an upper bound and the graphs having small mixed Roman domination numbers.
      PubDate: 2017-10-01
      DOI: 10.1007/s40840-015-0141-1
      Issue No: Vol. 40, No. 4 (2017)
       
  • Additive Results for the Generalized Drazin Inverse in a Banach Algebra
    • Authors: Dijana Mosić
      Pages: 1465 - 1478
      Abstract: Abstract Under new conditions on Banach algebra elements a and b, we derive explicit expressions for the generalized Drazin inverse of the sum \(a+b\) . As an application of our results, we present new representations for the generalized Drazin inverse of a block matrix in a Banach algebra.
      PubDate: 2017-10-01
      DOI: 10.1007/s40840-015-0143-z
      Issue No: Vol. 40, No. 4 (2017)
       
  • Approximation of q -Stancu-Beta Operators Which Preserve $$x^2$$ x 2
    • Authors: M. Mursaleen; Khursheed J. Ansari
      Pages: 1479 - 1491
      Abstract: Abstract In this paper, we study some approximation properties of q-analogue of Stancu-Beta operators which preserve \(x^{2}\) . We determine the rate of global convergence in weighted spaces. We also prove the Voronovskaja-type theorem for these operators.
      PubDate: 2017-10-01
      DOI: 10.1007/s40840-015-0146-9
      Issue No: Vol. 40, No. 4 (2017)
       
  • A Modified Method for a Cauchy Problem of the Helmholtz Equation
    • Authors: Haihua Qin; Jingmei Lu
      Pages: 1493 - 1522
      Abstract: Abstract In this paper, a Cauchy problem for the Helmholtz equation is investigated. It is well known that this problem is severely ill-posed in the sense that the solution (if it exists) does not depend continuously on the given Cauchy data. To overcome such difficulties, we propose a modified regularization method to approximate the solution of this problem, and then analyze the stability and convergence of the proposed regularization method based on the conditional stability estimates. Finally, we present two numerical examples to illustrate that the proposed regularization method works well.
      PubDate: 2017-10-01
      DOI: 10.1007/s40840-015-0148-7
      Issue No: Vol. 40, No. 4 (2017)
       
  • An Application of Variational Approach to Delay Hamiltonian Systems on
           Time Scales with Impulses
    • Authors: Jianwen Zhou; Yongkun Li; Yanning Wang
      Pages: 1523 - 1543
      Abstract: Abstract In this paper, we present a recent approach via variational methods and critical point theory to obtain the existence of periodic solutions for a class of delay Hamiltonian systems on time scales with impulsive effects. The variational principle is given, and some existence theorems and two multiplicity results of periodic solutions are obtained. Finally, one example is presented to illustrate the feasibility and effectiveness of our results. Our results are new even in both the differential equations case and the difference equations case.
      PubDate: 2017-10-01
      DOI: 10.1007/s40840-015-0149-6
      Issue No: Vol. 40, No. 4 (2017)
       
  • Characterizing Maximal Non-Mori Subrings of an Integral Domain
    • Authors: Noômen Jarboui; Manar El Islam Toumi
      Pages: 1545 - 1557
      Abstract: Abstract The main purpose of this paper is to study maximal non-Mori subrings R of a domain S. We give characterizations of such domains in several cases. If the ring R is semilocal, (R, S) is a normal pair, and R is a maximal non-Mori subring of S, we give sharp upper bounds for the number of rings and the length of chains of rings in [R, S], the set of intermediate rings.
      PubDate: 2017-10-01
      DOI: 10.1007/s40840-015-0150-0
      Issue No: Vol. 40, No. 4 (2017)
       
  • A Conformal Connection on Null Hypersurfaces of Indefinite Kenmotsu
           Manifolds
    • Authors: Fortuné Massamba
      Pages: 1559 - 1575
      Abstract: Abstract In this paper, our main remark is that proper totally contact umbilical integral manifolds of screen integrable null hypersurfaces in indefinite Kenmotsu manifolds admit \(\eta \) -Weyl structures. Its geometry is closely related to the one of a normal subbundle over the indefinite Kenmotsu manifold.
      PubDate: 2017-10-01
      DOI: 10.1007/s40840-015-0152-y
      Issue No: Vol. 40, No. 4 (2017)
       
  • Multiple Solutions of Neumann Problems: An Orlicz–Sobolev Space
           Setting
    • Authors: Ghasem A. Afrouzi; Vicenţiu D. Rădulescu; Saeid Shokooh
      Pages: 1591 - 1611
      Abstract: Abstract In the present paper, we establish the range of two parameters for which a non-homogeneous boundary value problem admits at least three weak solutions. The proof of the main results relies on recent variational principles due to Ricceri.
      PubDate: 2017-10-01
      DOI: 10.1007/s40840-015-0153-x
      Issue No: Vol. 40, No. 4 (2017)
       
  • Nice Operators into G -Spaces
    • Authors: Ana M. Cabrera-Serrano; Juan F. Mena-Jurado
      Pages: 1613 - 1621
      Abstract: Abstract G-spaces are a class of \(L_1\) -preduals introduced by Grothendieck. We prove that if every extreme operator from any Banach space into a G-space, X, is a nice operator (that is, its adjoint preserves extreme points), then X is isometrically isomorphic to \(c_0(I)\) for some set I. One of the main points in the proof is a characterization of spaces of type \(c_0(I)\) by means of the structure topology on the extreme points of the dual space.
      PubDate: 2017-10-01
      DOI: 10.1007/s40840-015-0155-8
      Issue No: Vol. 40, No. 4 (2017)
       
  • On $$\eta $$ η -Einstein Para- S -manifolds
    • Authors: Luis M. Fernández; A. Prieto-Martín
      Pages: 1623 - 1637
      Abstract: Abstract We introduce para-S-manifolds and obtain some results concerning the curvature of these manifolds. In particular, we prove that there does not exist Einstein para-S-manifold, and consequently, we investigate \(\eta \) -Einstein para-S-manifolds and the conditions for them to be \(\xi \) -conformally flat.
      PubDate: 2017-10-01
      DOI: 10.1007/s40840-015-0156-7
      Issue No: Vol. 40, No. 4 (2017)
       
  • Factorization of Operators Through Orlicz Spaces
    • Authors: M. Mastyło; E. A. Sánchez Pérez
      Pages: 1653 - 1675
      Abstract: Abstract We study factorization of operators between quasi-Banach spaces. We prove the equivalence between certain vector norm inequalities and the factorization of operators through Orlicz spaces. As a consequence, we obtain the Maurey–Rosenthal factorization of operators into \(L_p\) -spaces. We give several applications. In particular, we prove a variant of Maurey’s Extension Theorem.
      PubDate: 2017-10-01
      DOI: 10.1007/s40840-015-0158-5
      Issue No: Vol. 40, No. 4 (2017)
       
  • Inequalities Concerning the Polar Derivative of a Polynomial
    • Authors: Suhail Gulzar; N. A. Rather
      Pages: 1691 - 1700
      Abstract: Abstract In this paper, certain refinements and generalizations of some inequalities concerning the polynomials and their polar derivative are obtained.
      PubDate: 2017-10-01
      DOI: 10.1007/s40840-015-0183-4
      Issue No: Vol. 40, No. 4 (2017)
       
  • Well-Posedness of the Split Inverse Variational Inequality Problem
    • Authors: Rong Hu; Ya Ping Fang
      Pages: 1733 - 1744
      Abstract: Abstract The aim of this paper is to study the well-posedness of the split inverse variational inequality problem. We extend the notion of well-posedness to the split inverse variational inequality problem and establish Furi–Vignoli-type characterizations for the well-posedness. We prove that the well-posedness of the split inverse variational inequality problem is equivalent to the existence and uniqueness of its solution.
      PubDate: 2017-10-01
      DOI: 10.1007/s40840-015-0213-2
      Issue No: Vol. 40, No. 4 (2017)
       
  • Centers of Path Algebras, Cohn and Leavitt Path Algebras
    • Authors: María G. Corrales García; Dolores Martín Barquero; Cándido Martín González; Mercedes Siles Molina; José F. Solanilla Hernández
      Pages: 1745 - 1767
      Abstract: Abstract This paper is devoted to the study of the center of several types of path algebras associated to a graph E over a field K. First we consider the path algebra KE and prove that if the number of vertices is infinite then the center is zero; otherwise, it is K, except when the graph E is a cycle in which case the center is K[x], the polynomial algebra in one indeterminate. Then we compute the centers of prime Cohn and Leavitt path algebras. A lower and an upper bound for the center of a Leavitt path algebra are given by introducing the graded Baer radical for graded algebras. In the final section we describe the center of a prime graph C \(^*\) -algebra for a row-finite graph.
      PubDate: 2017-10-01
      DOI: 10.1007/s40840-015-0214-1
      Issue No: Vol. 40, No. 4 (2017)
       
  • More on the Colorful Monochromatic Connectivity
    • Authors: Ran Gu; Xueliang Li; Zhongmei Qin; Yan Zhao
      Pages: 1769 - 1779
      Abstract: Abstract An edge-coloring of a connected graph is a monochromatically-connecting coloring (MC-coloring, for short) if there is a monochromatic path joining any two vertices, which was introduced by Caro and Yuster. Let mc(G) denote the maximum number of colors used in an MC-coloring of a graph G. Note that an MC-coloring does not exist if G is not connected, in which case we simply let \(mc(G)=0\) . In this paper, we characterize all connected graphs of size m with \(mc(G)=1, 2, 3, 4\) , \(m-1\) , \(m-2\) and \(m-3\) , respectively. We use G(n, p) to denote the Erdős-Rényi random graph model, in which each of the \(\left( {\begin{array}{c}n\\ 2\end{array}}\right) \) pairs of vertices appears as an edge with probability p independent from other pairs. For any function f(n) satisfying \(1\le f(n)<\frac{1}{2}n(n-1)\) , we show that if \(\ell n \log n\le f(n)<\frac{1}{2}n(n-1)\) , where \(\ell \in \mathbb {R}^+\) , then \(p=\frac{f(n)+n\log \log n}{n^2}\) is a sharp threshold function for the property \(mc\left( G\left( n,p\right) \right) \ge f(n)\) ; if \(f(n)=o(n\log n)\) , then \(p=\frac{\log n}{n}\) is a sharp threshold function for the property \(mc\left( G\left( n,p\right) \right) \ge f(n)\) .
      PubDate: 2017-10-01
      DOI: 10.1007/s40840-015-0274-2
      Issue No: Vol. 40, No. 4 (2017)
       
  • Toeplitz Matrices Whose Elements are the Coefficients of Starlike and
           Close-to-Convex Functions
    • Authors: D. K. Thomas; S. Abdul Halim
      Pages: 1781 - 1790
      Abstract: Abstract Let f be analytic in \(D=\{z: z < 1\}\) with \(f(z)=z+\sum _{n=2}^{\infty }a_{n}z^{n}\) . Suppose that \(S^*\) is the class of starlike functions, and K is the class of close-to-convex functions. The paper instigates a study of finding estimates for Toeplitz determinants whose elements are the coefficients \(a_{n}\) for f in \(S^*\) and K.
      PubDate: 2017-10-01
      DOI: 10.1007/s40840-016-0385-4
      Issue No: Vol. 40, No. 4 (2017)
       
  • Some Applications of Nunokawa’s Lemma
    • Authors: Mamoru Nunokawa; Janusz Sokół; Nak Eun Cho
      Pages: 1791 - 1800
      Abstract: Abstract The purpose of the present paper is to prove a geometric property for analytic functions p in the open unit disk with \(p(0)=1\) by using Nunokawa’s result, which is a generalized form of well-known Jack’s lemma. This property concerns a boundary behavior of the functions p. As the applications of the main result, we obtain a few corollaries where several sufficient conditions for p to be of the real part greater than a given number \(\beta \ (0\le \beta <1)\) are also investigated.
      PubDate: 2017-10-01
      DOI: 10.1007/s40840-016-0398-z
      Issue No: Vol. 40, No. 4 (2017)
       
  • Moufang Loops of Odd order $$p^4q^3$$ p 4 q 3
    • Authors: Andrew Rajah; Lois Adewoye Ademola
      Pages: 1817 - 1828
      Abstract: Abstract It is known that all Moufang loops of order \(p^4\) are associative if p is a prime greater than 3. Also, nonassociative Moufang loops of order \(p^5\) (for all primes p) and \(pq^3\) (for distinct odd primes p and q, with the necessary and sufficient condition \(q\equiv 1({\text{ mod }}\ p)\) ) have been proved to exist. Consider a Moufang loop L of order \(p^{\alpha }q^{\beta }\) where p and q are odd primes with \(p<q\) , \(q\not \equiv 1 ({\text{ mod }}\ p)\) and \(\alpha ,\beta \in {\mathbb {Z}}^+\) . It has been proved that L is associative if \(\alpha \le 3\) and \(\beta \le 3\) . In this paper, we extend this result to the case \(p>3\) , \(\alpha \le 4\) and \(\beta \le 3\) .
      PubDate: 2017-10-01
      DOI: 10.1007/s40840-017-0471-2
      Issue No: Vol. 40, No. 4 (2017)
       
  • Multilinear Commutators of Singular Integral Operators in Variable
           Exponent Herz-Type Spaces
    • Authors: Liwei Wang; Lisheng Shu
      Abstract: Abstract In this paper, we study the boundedness of multilinear commutators of Hardy–Littlewood maximal operators in variable exponent Herz and Herz–Morrey spaces, which in turn are used to obtain the boundedness for a large class of the multilinear commutators related to sublinear operators. Moreover, based on the atomic decomposition and on generalization of the BMO norm, we study the boundedness of multilinear commutators of singular integral operators with Calderón–Zygmund kernels in variable exponent Herz-type Hardy spaces.
      PubDate: 2017-10-09
      DOI: 10.1007/s40840-017-0554-0
       
 
 
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