1 1735-4463 ACECR at Tarbiat Modares University 319 General On Generalized Coprime Graphs Mutharasu S. b Mohamed Rilwan N. c Angel Jebitha M. K. d Tamizh Chelvam T. b Manonmaniam Sundaranar University c Manonmaniam Sundaranar University d Manonmaniam Sundaranar University 1 11 2014 9 2 1 6 29 05 2012 04 11 2014 Paul Erdos defined the concept of coprime graph and studied about cycles in coprime graphs. In this paper this concept is generalized and a new graph called Generalized coprime graph is introduced. Having observed certain basic properties of the new graph it is proved that the chromatic number and the clique number of some generalized coprime graphs are equal.
640 General Local Cohomology with Respect to a Cohomologically Complete Intersection Pair of Ideals Pour Eshmanan Talemi A. Tehranian A. 1 11 2014 9 2 7 13 04 11 2014 04 11 2014 Let $(R,fm,k)$ be a local Gorenstein ring of dimension $n$. Let $H_{I,J}^i(R)$ be the  local cohomology with respect to a pair of ideals $I,J$ and $c$ be the $inf{i|H_{I,J}^i(R)neq0}$. A pair of ideals $I, J$ is called cohomologically complete intersection if $H_{I,J}^i(R)=0$ for all $ineq c$. It is shown that, when $H_{I,J}^i(R)=0$ for all $ineq c$, (i) a minimal injective resolution of $H_{I,J}^c(R)$ presents like that of a Gorenstein ring (ii) $Hom_R(H_{I,J}^c(R),H_{I,J}^c(R))simeq R$, where $(R,fm)$ is a complete ring. Also we get an estimate of the  dimension of $H_{I,J}^i(R)$. 522 General Strongly almost ideal convergent sequences in a locally convex space defined by Musielak-Orlicz function Hazarika B. h h Rajiv Gandhi University 1 11 2014 9 2 15 35 21 11 2013 13 09 2014 In this article, we introduce a new class of ideal convergent sequence spaces using an infinite matrix, Musielak-Orlicz function and a new generalized difference matrix in locally convex spaces. We investigate some linear topological structures and algebraic properties of these spaces. We also give some relations related to these sequence spaces. 641 General The p-median and p-center Problems on Bipartite Graphs Fathali J. Jafari Rad N. Rahimi Sherbaf S. 1 11 2014 9 2 37 43 04 11 2014 04 11 2014 Let $G$ be a bipartite graph. In this paper we consider the two kind of location problems namely $p$-center and $p$-median problems on bipartite graphs. The $p$-center and $p$-median problems asks to find a subset of vertices of cardinality $p$, so that respectively the maximum and sum of the distances from this set to all other vertices in $G$ is minimized. For each case we present some properties to find exact solutions. 642 General Chromaticity of Turan Graphs with At Most Three Edges Deleted Lau G.-C. Peng Y.-H. Alikhani S. 1 11 2014 9 2 45 64 04 11 2014 04 11 2014 Let $P(G,lambda)$ be the chromatic polynomial of a graph $G$. A graph $G$ ischromatically unique if for any graph $H$, $P(H, lambda) = P(G,lambda)$ implies $H$ is isomorphic to $G$. In this paper, we determine the chromaticity of all Tur;#39{a}n graphs with at most three edges deleted. As a by product, we found many families of chromatically unique graphs and chromatic equivalence classes of graphs. 643 General A Semidefinite Optimization Approach to Quadratic Fractional Optimization with a Strictly Convex Quadratic Constraint Salahi M. Fallahi S. 1 11 2014 9 2 65 71 04 11 2014 04 11 2014 In this paper we consider a fractional optimization problem that minimizes the ratio of two quadratic functions subject to a strictly convex quadratic constraint. First using the extension of Charnes-Cooper transformation, an equivalent homogenized quadratic reformulation of the problem is given. Then we show that under certain assumptions, it can be solved to global optimality using semidefinite optimization relaxation in polynomial time. 524 Special On Some Fractional Systems of Difference Equations Touafek N. Jijel University 1 11 2014 9 2 73 86 25 11 2013 04 11 2014 This paper deal with the solutions of the systems of difference equations $$x_{n+1}=frac{y_{n-3}y_nx_{n-2}}{y_{n-3}x_{n-2}pm y_{n-3}y_n pm y_nx_{n-2}}, ,y_{n+1}=frac{y_{n-2}x_{n-1}}{ 2y_{n-2}pm x_{n-1}},,nin mathbb{N}_{0},$$ where $mathbb{N}_{0}=mathbb{N}cup left{0right}$, and initial values $x_{-2},, x_{-1},,x_{0},,y_{-3},,y_{-2},,y_{-1},,y_{0}$ are non-zero real numbers. 644 General Some Results on Convexity and Concavity of Multivariate Copulas Dolati A. Dehgan Nezhad A. 1 11 2014 9 2 87 100 04 11 2014 04 11 2014 This paper provides some results on different types of convexity and concavity in the class of multivariate copulas. We also study their properties and provide several examples to illustrate our results. 377 General Application of the Norm Estimates for Univalence of Analytic Functions Aghalary R. 1 11 2014 9 2 101 108 28 12 2012 04 11 2014 By using norm estimates of the pre-Schwarzian derivatives for certain family of analytic functions, we shall give simple sufficient conditions for univalence of analytic functions. 391 Special On the Ultramean Construction Bagheri M. Tarbiat-Modares 1 11 2014 9 2 109 119 04 03 2013 04 11 2014 We use the ultramean construction to prove linear compactness theorem. We also extend the Rudin-Keisler ordering to maximal probability charges and characterize it by embeddings of power ultrameans. 843 General ABSTRACTS IN PERSIAN - Vol. 9, No. 2 in This Volume Name of Authors 1 11 2014 9 2 121 131 27 01 2016 27 01 2016 Please see the full text contains the Pesian abstracts for this volume.