for Journals by Title or ISSN for Articles by Keywords help
 Subjects -> MATHEMATICS (Total: 867 journals)     - APPLIED MATHEMATICS (69 journals)    - GEOMETRY AND TOPOLOGY (19 journals)    - MATHEMATICS (645 journals)    - MATHEMATICS (GENERAL) (40 journals)    - NUMERICAL ANALYSIS (19 journals)    - PROBABILITIES AND MATH STATISTICS (75 journals) MATHEMATICS (645 journals)                  1 2 3 4 | Last
 Showing 1 - 200 of 538 Journals sorted alphabetically Abakós       (Followers: 3) Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg       (Followers: 2) Academic Voices : A Multidisciplinary Journal       (Followers: 2) Accounting Perspectives       (Followers: 6) ACM Transactions on Algorithms (TALG)       (Followers: 16) ACM Transactions on Computational Logic (TOCL)       (Followers: 4) ACM Transactions on Mathematical Software (TOMS)       (Followers: 6) ACS Applied Materials & Interfaces       (Followers: 21) Acta Applicandae Mathematicae       (Followers: 1) Acta Mathematica       (Followers: 10) Acta Mathematica Hungarica       (Followers: 2) Acta Mathematica Scientia       (Followers: 5) Acta Mathematica Sinica, English Series       (Followers: 5) Acta Mathematica Vietnamica Acta Mathematicae Applicatae Sinica, English Series Advanced Science Letters       (Followers: 5) Advances in Applied Clifford Algebras       (Followers: 3) Advances in Calculus of Variations       (Followers: 2) Advances in Catalysis       (Followers: 5) Advances in Complex Systems       (Followers: 7) Advances in Computational Mathematics       (Followers: 15) Advances in Decision Sciences       (Followers: 4) Advances in Difference Equations       (Followers: 1) Advances in Fixed Point Theory       (Followers: 5) Advances in Geosciences (ADGEO)       (Followers: 9) Advances in Linear Algebra & Matrix Theory       (Followers: 1) Advances in Materials Sciences       (Followers: 16) Advances in Mathematical Physics       (Followers: 6) Advances in Mathematics       (Followers: 10) Advances in Numerical Analysis       (Followers: 4) Advances in Operations Research       (Followers: 11) Advances in Porous Media       (Followers: 4) Advances in Pure and Applied Mathematics       (Followers: 5) Advances in Pure Mathematics       (Followers: 4) Advances in Science and Research (ASR)       (Followers: 6) Aequationes Mathematicae       (Followers: 2) African Journal of Educational Studies in Mathematics and Sciences       (Followers: 5) African Journal of Mathematics and Computer Science Research       (Followers: 4) Afrika Matematika       (Followers: 1) Air, Soil & Water Research       (Followers: 7) AKSIOMA Journal of Mathematics Education       (Followers: 1) Algebra and Logic       (Followers: 2) Algebra Colloquium       (Followers: 4) Algebra Universalis       (Followers: 2) Algorithmic Operations Research       (Followers: 5) Algorithms       (Followers: 9) Algorithms Research       (Followers: 1) American Journal of Biostatistics       (Followers: 9) American Journal of Computational and Applied Mathematics       (Followers: 3) American Journal of Mathematical Analysis American Journal of Mathematics       (Followers: 7) American Journal of Operations Research       (Followers: 5) American Mathematical Monthly       (Followers: 6) An International Journal of Optimization and Control: Theories & Applications       (Followers: 7) Analele Universitatii Ovidius Constanta - Seria Matematica       (Followers: 1) Analysis       (Followers: 2) Analysis and Applications       (Followers: 1) Analysis and Mathematical Physics       (Followers: 4) Analysis Mathematica Annales Mathematicae Silesianae Annales mathématiques du Québec       (Followers: 4) Annales UMCS, Mathematica       (Followers: 1) Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica Annali di Matematica Pura ed Applicata       (Followers: 1) Annals of Combinatorics       (Followers: 3) Annals of Data Science       (Followers: 8) Annals of Discrete Mathematics       (Followers: 6) Annals of Mathematics Annals of Mathematics and Artificial Intelligence       (Followers: 6) Annals of Pure and Applied Logic       (Followers: 2) Annals of the Alexandru Ioan Cuza University - Mathematics Annals of the Institute of Statistical Mathematics       (Followers: 1) Annals of West University of Timisoara - Mathematics Annuaire du Collège de France       (Followers: 5) Applicable Algebra in Engineering, Communication and Computing       (Followers: 2) Applications of Mathematics       (Followers: 1) Applied Categorical Structures       (Followers: 2) Applied Computational Intelligence and Soft Computing       (Followers: 12) Applied Mathematics       (Followers: 3) Applied Mathematics       (Followers: 4) Applied Mathematics & Optimization       (Followers: 4) Applied Mathematics - A Journal of Chinese Universities Applied Mathematics Letters       (Followers: 1) Applied Mathematics Research eXpress       (Followers: 1) Applied Network Science Applied Numerical Mathematics       (Followers: 5) Applied Spatial Analysis and Policy       (Followers: 4) Arab Journal of Mathematical Sciences       (Followers: 2) Arabian Journal of Mathematics       (Followers: 2) Archive for Mathematical Logic       (Followers: 1) Archive of Applied Mechanics       (Followers: 4) Archive of Numerical Software Archives of Computational Methods in Engineering       (Followers: 4) Arkiv för Matematik       (Followers: 1) Arnold Mathematical Journal       (Followers: 1) Artificial Satellites : The Journal of Space Research Centre of Polish Academy of Sciences       (Followers: 17) Asia-Pacific Journal of Operational Research       (Followers: 3) Asian Journal of Algebra       (Followers: 1) Asian Journal of Current Engineering & Maths Asian-European Journal of Mathematics       (Followers: 2) Australian Mathematics Teacher, The       (Followers: 7) Australian Primary Mathematics Classroom       (Followers: 2) Australian Senior Mathematics Journal       (Followers: 1) Automatic Documentation and Mathematical Linguistics       (Followers: 5) Axioms Baltic International Yearbook of Cognition, Logic and Communication Basin Research       (Followers: 3) BIBECHANA BIT Numerical Mathematics BoEM - Boletim online de Educação Matemática Boletim Cearense de Educação e História da Matemática Boletim de Educação Matemática Boletín de la Sociedad Matemática Mexicana Bollettino dell'Unione Matematica Italiana       (Followers: 1) British Journal of Mathematical and Statistical Psychology       (Followers: 20) Bruno Pini Mathematical Analysis Seminar Buletinul Academiei de Stiinte a Republicii Moldova. Matematica       (Followers: 7) Bulletin des Sciences Mathamatiques       (Followers: 4) Bulletin of Dnipropetrovsk University. Series : Communications in Mathematical Modeling and Differential Equations Theory       (Followers: 1) Bulletin of Mathematical Sciences       (Followers: 1) Bulletin of the Brazilian Mathematical Society, New Series Bulletin of the London Mathematical Society       (Followers: 3) Bulletin of the Malaysian Mathematical Sciences Society Calculus of Variations and Partial Differential Equations Canadian Journal of Science, Mathematics and Technology Education       (Followers: 17) Carpathian Mathematical Publications       (Followers: 1) Catalysis in Industry       (Followers: 1) CEAS Space Journal CHANCE       (Followers: 5) Chaos, Solitons & Fractals       (Followers: 3) ChemSusChem       (Followers: 7) Chinese Annals of Mathematics, Series B Chinese Journal of Catalysis       (Followers: 2) Chinese Journal of Mathematics Clean Air Journal       (Followers: 2) Cogent Mathematics       (Followers: 2) Cognitive Computation       (Followers: 4) Collectanea Mathematica College Mathematics Journal       (Followers: 1) COMBINATORICA Combustion Theory and Modelling       (Followers: 13) Commentarii Mathematici Helvetici       (Followers: 1) Communications in Contemporary Mathematics Communications in Mathematical Physics       (Followers: 1) Communications On Pure & Applied Mathematics       (Followers: 3) Complex Analysis and its Synergies       (Followers: 2) Complex Variables and Elliptic Equations: An International Journal Complexus Composite Materials Series       (Followers: 9) Comptes Rendus Mathematique       (Followers: 1) Computational and Applied Mathematics       (Followers: 2) Computational and Mathematical Methods in Medicine       (Followers: 2) Computational and Mathematical Organization Theory       (Followers: 2) Computational Complexity       (Followers: 4) Computational Mathematics and Modeling       (Followers: 8) Computational Mechanics       (Followers: 4) Computational Methods and Function Theory Computational Optimization and Applications       (Followers: 7) Computers & Mathematics with Applications       (Followers: 5) Concrete Operators       (Followers: 4) Confluentes Mathematici COSMOS Cryptography and Communications       (Followers: 12) Cuadernos de Investigación y Formación en Educación Matemática Cubo. A Mathematical Journal Czechoslovak Mathematical Journal       (Followers: 1) Demographic Research       (Followers: 11) Demonstratio Mathematica Dependence Modeling Design Journal : An International Journal for All Aspects of Design       (Followers: 28) Developments in Clay Science       (Followers: 1) Developments in Mineral Processing       (Followers: 3) Dhaka University Journal of Science Differential Equations and Dynamical Systems       (Followers: 2) Discrete Mathematics       (Followers: 7) Discrete Mathematics & Theoretical Computer Science Discrete Mathematics, Algorithms and Applications       (Followers: 2) Discussiones Mathematicae Graph Theory       (Followers: 1) Doklady Mathematics Duke Mathematical Journal       (Followers: 1) Edited Series on Advances in Nonlinear Science and Complexity Electronic Journal of Graph Theory and Applications       (Followers: 2) Electronic Notes in Discrete Mathematics       (Followers: 2) Elemente der Mathematik       (Followers: 3) Energy for Sustainable Development       (Followers: 9) Enseñanza de las Ciencias : Revista de Investigación y Experiencias Didácticas Ensino da Matemática em Debate Entropy       (Followers: 4) ESAIM: Control Optimisation and Calculus of Variations       (Followers: 1) European Journal of Combinatorics       (Followers: 4) European Journal of Mathematics       (Followers: 1) European Scientific Journal       (Followers: 2) Experimental Mathematics       (Followers: 3) Expositiones Mathematicae       (Followers: 2) Facta Universitatis, Series : Mathematics and Informatics Fasciculi Mathematici Finite Fields and Their Applications       (Followers: 4) Fixed Point Theory and Applications       (Followers: 1) Formalized Mathematics       (Followers: 2) Foundations and Trends® in Econometrics       (Followers: 4)

1 2 3 4 | Last

 Bulletin of the Malaysian Mathematical Sciences Society   [SJR: 0.614]   [H-I: 14]   [0 followers]  Follow         Hybrid journal (It can contain Open Access articles)    ISSN (Print) 0126-6705 - ISSN (Online) 2180-4206    Published by Springer-Verlag  [2329 journals]
• A Note on Generalized Mercer’s Inequality
• Authors: Asif R. Khan; Josip Pečarić; Marjan Praljak
Pages: 881 - 889
Abstract: We give an integral version and a refinement of M. Niezgoda’s extension of the variant of Jensen’s inequality given by A. McD. Mercer.
PubDate: 2017-04-01
DOI: 10.1007/s40840-017-0449-0
Issue No: Vol. 40, No. 2 (2017)

• An Algorithm for Vector Optimization Problems
• Authors: Xun-Hua Gong; Fang Liu
Pages: 919 - 929
Abstract: In this paper, we consider of finding efficient solution and weakly efficient solution for nonconvex vector optimization problems. When X and Y are normed spaces, F is an anti-Lipschitz mapping from X to Y, and the ordering cone is regular, we present an algorithm to guarantee that the generated sequence converges to an efficient solution with respect to normed topology. If the domain of the mapping is compact, we prove that the generated sequence converges to an efficient solution with respect to normed topology without requiring that mapping is anti-Lipschitz. We also give an algorithm to guarantee that the generated sequence converges to a weakly efficient solution with respect to normed topology.
PubDate: 2017-04-01
DOI: 10.1007/s40840-017-0455-2
Issue No: Vol. 40, No. 2 (2017)

• Poisson Approximation for a Sum of Negative Binomial Random Variables
• Authors: K. Teerapabolarn
Pages: 931 - 939
Abstract: The Stein–Chen method is used to determine uniform and non-uniform bounds on the ratio between the distribution function of a sum of independent negative binomial random variables and a Poisson distribution function with mean $$\lambda = \sum _{i=1}^nr_iq_i$$ , where $$r_i$$ and $$p_i=1-q_i$$ are parameters of each negative binomial distribution. With these bounds, it indicates that the Poisson distribution function with this mean can be used as an estimate of the independent summands when all $$q_i$$ are small or $$\lambda$$ is small. Finally, some numerical examples for each result are given.
PubDate: 2017-04-01
DOI: 10.1007/s40840-016-0328-0
Issue No: Vol. 40, No. 2 (2017)

• Generalized Symmetries and Recursive Operators of Some Diffusive Equations
• Authors: Sameerah Jamal; A. Mathebula
Abstract: This paper considers different routes to generalized symmetries for some ecological equations that arise in spatial theory. Two primary methods for the derivation of generalized symmetries are the standard Lie invariance condition with vector fields dependent on derivatives and, secondly, a recursive operator. The former is less efficient especially if it includes derivatives that become increasingly higher in order, and this necessarily complicates the nature of the computations. The latter involves a nontrivial analysis to define a recursion operator, if one exists, but is successful in providing higher-order analogs of the equation or equivalently, higher-order symmetries. A linear Kierstead–Slobodkin and Skellam model is shown to possess a recursion operator that renders the equation completely integrable, by verifying the presence of infinitely many higher-order symmetries. Moreover, we apply the scheme of the characteristic approach to establish nontrivial conserved vectors from multipliers $${\varLambda }(t,x,u,u_x,u_t),$$ that are analogous to integrating factors.
PubDate: 2017-05-20
DOI: 10.1007/s40840-017-0510-z

• Multiple Solutions for a Class of Quasilinear Schrödinger Systems in
$${\mathbb {R}}^{N}$$ R N
• Authors: Caisheng Chen; Hongwei Yang
Abstract: In this work the symmetric mountain pass lemma is employed to establish the existence of infinitely many solutions for a class of quasilinear Schrödinger system in $${\mathbb {R}}^{N}$$ involving a parameter $$\alpha$$ and subcritical nonlinearities.
PubDate: 2017-05-15
DOI: 10.1007/s40840-017-0502-z

• Some Approximation Results on Two Parametric q -Stancu–Beta
Operators
• Authors: M. Mursaleen; Khursheed J. Ansari
Abstract: In the present paper, we introduce a two parametric q-analogue of Stancu-Beta operators and establish some direct results in the polynomial weighted space of continuous functions defined on the interval $$[0,\infty )$$ . We use Lipschitz-type maximal function to find pointwise estimate. Furthermore, we obtain a Voronovskaja-type theorem for these operators.
PubDate: 2017-05-12
DOI: 10.1007/s40840-017-0499-3

• On Regular Modules over Commutative Rings
• Authors: Dawood Hassanzadeh-Lelekaami; Hajar Roshan-Shekalgourabi
Abstract: In this paper, we investigate the class of von Neumann regular modules over commutative rings. More precisely, we introduce a characterization of regular modules, and then, we study some properties of these modules in viewpoint of this characterization. Among other things, we show that the Nakayama’s Lemma and Krull’s intersection theorem hold for this class of modules. Also, some explicit expressions for submodules of regular modules are introduced.
PubDate: 2017-05-12
DOI: 10.1007/s40840-017-0501-0

• On the Riemannian Curvature Tensor of a Real Hypersurface in Complex
Two-Plane Grassmannians
• Authors: Juan de Dios Pérez; Changhwa Woo
Abstract: We prove the nonexistence of Hopf real hypersurfaces in complex two-plane Grassmannians such that the covariant derivatives with respect to Levi-Civita and kth generalized Tanaka–Webster connections in the direction of the Reeb vector field applied to the Riemannian curvature tensor coincide when the shape operator and the structure operator commute on the $$\mathcal Q$$ -component of the Reeb vector field.
PubDate: 2017-05-08
DOI: 10.1007/s40840-017-0500-1

• An Analytic Operator-Valued Generalized Feynman Integral on Function Space
• Authors: Seung Jun Chang; Jae Gil Choi; Il Yong Lee
Abstract: In this paper, we use a generalized Brownian motion process to define an analytic operator-valued Feynman integral. We then establish the existence of the analytic operator-valued generalized Feynman integral. We next investigate a stability theorem for the analytic operator-valued generalized Feynman integral.
PubDate: 2017-05-03
DOI: 10.1007/s40840-017-0498-4

• A Fixed-Component Point Theorem and Applications
• Authors: Phan Quoc Khanh; Nguyen Hong Quan
Abstract: We prove a topologically based characterization of the existence of fixed-component points for an arbitrary family of set-valued maps defined on a product set by using topologically based structures, without linear or convexity structures. Then, applying this general result, we derive sufficient conditions for the existence of coincidence-component points of families of set-valued maps and intersection points of families of sets, as examples for many other important points in nonlinear analysis. Applications to systems of variational relations and abstract economies are provided as examples for other optimization-related problems.
PubDate: 2017-05-02
DOI: 10.1007/s40840-017-0496-6

• An Ehresmann–Schein–Nambooripad-Type Theorem for a Class of P
-Restriction Semigroups
• Authors: Shoufeng Wang
Abstract: As generalizations of inverse semigroups, restriction semigroups and regular $$*$$ -semigroups are investigated by many authors extensively in the literature. In particular, Lawson and Hollings have proved that the category of restriction semigroups together with prehomomorphisms (resp. (2,1,1)-homomorphisms) is isomorphic to the category of inductive categories together with ordered functors (resp. strongly ordered functors), which generalizes the well-known Ehresmann–Schein–Nambooripad theorem (ESN theorem for short) for inverse semigroups. On the other hand, Imaoka and Fujiwara have also obtained an ESN-type theorem for locally inverse regular $$*$$ -semigroups. Recently, Jones generalized restriction semigroups and regular $$*$$ -semigroups to P-restriction semigroups from a varietal perspective and considered the constructions of P-restriction semigroups by using Munn’s approach. In this paper, we shall study the class of P-restriction semigroups by using “category approach.” We introduce the notion of inductive generalized categories over local semilattices by which a class of P-restriction semigroups called locally restriction P-restriction semigroups is described. Moreover, we show that the category of locally restriction P-restriction semigroups together with (2,1,1)-prehomomorphisms (resp. (2,1,1)-homomorphisms) is isomorphic to the category of inductive generalized categories over local semilattices together with preadmissible mappings (resp. admissible mappings). Our work may be regarded as extending the ESN-type theorems for restriction semigroups and locally inverse regular $$*$$ -semigroups, respectively.
PubDate: 2017-05-02
DOI: 10.1007/s40840-017-0497-5

• New Spectral Solutions for High Odd-Order Boundary Value Problems via
Generalized Jacobi Polynomials
• Authors: W. M. Abd-Elhameed
Abstract: In this article, some new efficient and accurate algorithms are developed for solving linear and nonlinear odd-order two-point boundary value problems. The algorithm in linear case is based on the application of Petrov–Galerkin method. For implementing this algorithm, two certain families of generalized Jacobi polynomials are introduced and employed as trial and test functions. The trial functions satisfy the underlying boundary conditions of the differential equations, and the test functions satisfy the dual boundary conditions. The developed algorithm leads to linear systems with band matrices which can be efficiently inverted. These special systems are carefully investigated, especially their complexities. Another algorithm based on the application of the typical collocation method is presented for handling nonlinear odd-order two-point boundary value problems. The use of generalized Jacobi polynomials leads to simplified analysis and very efficient numerical algorithms. Numerical results are presented for the sake of testing the efficiency and applicability of the two proposed algorithms.
PubDate: 2017-04-27
DOI: 10.1007/s40840-017-0491-y

• Weighted Composition Operators from Analytic Besov Spaces into the Bloch
Space
• Authors: Qinghua Hu; Songxiao Li; Hasi Wulan
Abstract: In this paper, we give some new essential norm estimates of weighted composition operators $$uC_{\varphi }$$ from analytic Besov spaces into the Bloch space, where u is a function analytic on the unit disk $$\mathbb {D}$$ and $$\varphi$$ is an analytic self-map of $$\mathbb {D}$$ . Moreover, new characterizations for the boundedness, compactness and essential norm of weighted composition operators $$uC_{\varphi }$$ are obtained by the nth power of the symbol $$\varphi$$ and the Volterra operators $$I_u$$ and $$J_u$$ .
PubDate: 2017-04-21
DOI: 10.1007/s40840-017-0493-9

• Normal Criteria for Family Meromorphic Functions Sharing Holomorphic
Function
• Authors: Nguyen Van Thin
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: 2017-04-21
DOI: 10.1007/s40840-017-0492-x

• Explicit Iteration Methods for Solving Variational Inequalities in Banach
Spaces
• Authors: Pham Thanh Hieu; Nguyen Thi Thu Thuy; Jean Jacques Strodiot
Abstract: The problem of finding a solution of a variational inequality over the set of common fixed points of a nonexpansive semigroup is considered in a real and uniformly convex Banach space without imposing the sequential weak continuity of the normalized duality mapping. Two new explicit iterative methods are introduced based on the steepest-descent method, and conditions are given to obtain their strong convergence. A numerical example is showed to illustrate the convergence analysis of the proposed methods.
PubDate: 2017-04-20
DOI: 10.1007/s40840-017-0494-8

• Oscillation for Fractional Partial Differential Equations
• Authors: Yong Zhou; Bashir Ahmad; Fulai Chen; Ahmed Alsaedi
Abstract: In this paper, we develop the sufficient criteria for the oscillation of all solutions to the following fractional functional partial differential equation involving Riemann–Liouville fractional derivative equipped with initial and Neumann, Dirichlet and Robin boundary conditions: 1.1 \begin{aligned} \displaystyle \frac{\partial ^{\alpha } u(x, t)}{\partial t^{\alpha }}=C(t)\triangle u+\displaystyle \sum \limits _{i=1}^{n}P_i(x)u(x, t-\sigma _i)+R(x, t), \end{aligned} where $$0<\alpha <1$$ , $$(x, t)\in \Omega \times (0, \infty )$$ , $$\Omega$$ is a bounded domain in Euclidean $$n-$$ dimensional space $$\mathbb {R}^n$$ with a piecewise smooth boundary $$\partial \Omega$$ ; $$C\in C((0,\infty ),(-\infty ,0]),$$ $$\triangle$$ is the Laplacian in $$\mathbb {R}^\texttt {n}, P_i\in C(\Omega ,[0,\infty )), R(x,t)\in C(G, (-\infty ,\infty )), \sigma _i\in [0,\infty ), i=1,2,\ldots ,n$$ .
PubDate: 2017-04-20
DOI: 10.1007/s40840-017-0495-7

• Preservers of Completely Positive Matrix Rank for Inclines
• Authors: LeRoy B. Beasley; Preeti Mohindru; Rajesh Pereira
Abstract: A real symmetric matrix A is called completely positive if there exists a nonnegative real $$n\times k$$ matrix B such that $$A = BB^{t}$$ . The smallest value of k for all possible choices of nonnegative matrices B is called the CP-rank of A. We extend the ideas of complete positivity and the CP-rank to matrices whose entries are elements of an incline in a similar way. We classify maps on the set of $$n \times n$$ symmetric matrices over certain inclines which strongly preserve CP-rank-1 matrices as well as maps which preserve CP-rank-1 and CP-rank-k. The result suggests that there is a certain standard class of solutions for CP-rank preserver problems on incline matrices.
PubDate: 2017-04-18
DOI: 10.1007/s40840-017-0490-z

• Acyclic Edge Coloring of 4-Regular Graphs Without 3-Cycles
• Authors: Qiaojun Shu; Yiqiao Wang; Yulai Ma; Weifan Wang
Abstract: A proper edge coloring is called acyclic if no bichromatic cycles are produced. It was conjectured that every simple graph G with maximum degree $$\varDelta$$ is acyclically edge- $$(\varDelta +2)$$ -colorable. Basavaraju and Chandran (J Graph Theory 61:192–209, 2009) confirmed the conjecture for non-regular graphs G with $$\varDelta =4$$ . In this paper, we extend this result by showing that every 4-regular graph G without 3-cycles is acyclically edge-6-colorable.
PubDate: 2017-04-09
DOI: 10.1007/s40840-017-0484-x

• Concomitants of Ordered Variables from Huang–Kotz FGM Type Bivariate
Generalized Exponential Distribution
• Authors: H. M. Barakat; E. M. Nigm; A. H. Syam
Abstract: We introduce the Huang–Kotz Morgenstern type bivariate generalized exponential distribution. Some distributional properties of concomitants of order statistics as well as record values for this family are studied. Recurrence relations between single and product moments of concomitants are obtained. Moreover, the rank and the asymptotic behavior of concomitants of order statistics are investigated.
PubDate: 2017-04-05
DOI: 10.1007/s40840-017-0489-5

• Independent Rainbow Domination of Graphs
• Abstract: Given a positive integer t and a graph F, the goal is to assign a subset of the color set $$\{1,2,\ldots ,t\}$$ to every vertex of F such that every vertex with the empty set assigned has all t colors in its neighborhood. Such an assignment is called the t-rainbow dominating function ( $$t\mathrm{RDF}$$ ) of the graph F. A $$t\mathrm{RDF}$$ is independent ( $$It\mathrm{RDF}$$ ) if vertices assigned with non-empty sets are pairwise non-adjacent. The weight of a $$t\mathrm{RDF}$$ g of a graph F is the value $$w(g) =\sum _{v \in V(F)} g(v)$$ . The independent t-rainbow domination number $$i_{rt}(F)$$ is the minimum weight over all $$It\mathrm{RDF}$$ s of F. In this article, it is proved that the independent t-rainbow domination problem is NP-complete even if the input graph is restricted to a bipartite graph or a planar graph, and the results of the study provide some bounds for the independent t-rainbow domination number of any graph for a positive integer t. Moreover, the exact values and bounds of the independent t-rainbow domination numbers of some Petersen graphs and torus graphs are given.
PubDate: 2017-04-04
DOI: 10.1007/s40840-017-0488-6

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: 23.20.157.174

About JournalTOCs
API
Help
News (blog, publications)

JournalTOCs © 2009-2016