Spectra of some Operations on Graphs
Journal Title: JOURNAL OF ADVANCES IN MATHEMATICS - Year 2016, Vol 11, Issue 9
Abstract
In this paper, we consider a finite undirected and connected simple graph G(E, V) with vertex set V(G) and edge set E(G).We introduced a new computes the spectra of some operations on simple graphs [union of disjoint graphs, join of graphs, cartesian product of graphs, strong cartesian product of graphs, direct product of graphs].
Authors and Affiliations
Essam EI Seidy, Salah ElDin Hussein, Atef Abo Elkher
Strongly Rickart Modules
In this paper we introduce and study the concept of strongly Rickart modules and strongly CS-Rickart modules as a stronger than of Rickart modules [8] and CS-Rickart modules[3] respectively. A module M is said to b...
Existence of weak solutions for strongly damped wave equations with variable exponents
This work is concerned with a viscoelastic equation with strongly damping and variable exponents. The existence of weak solutions is established to the initial and boundary value problem under suitable assumptions by usi...
Enlargement of A Local Group To A Group
Local lie groups are introduced by Cartan [1]. Local groups are local lie groups without topologically property. The aim of this paper is to find conditions that a local group is contained in a group . &...
Numerical Solution of Double Integral of Singular Derivatives Using Trapezoidal Method with Romberg Acceleration
The goal of this paper is to evaluate numerically a double integral of partial Derivatives Using RTRT Method. For Trapezoidal method (one of Newton-Cotes formula) which will be based on two dimensions x and y. In additio...
New Numerical Methods for Solving Differential Equations
In this paper, we present new numerical methods to solve ordinary differential equations in both linear and nonlinear cases. we apply Daftardar-Gejji technique on theta-method to derive anew family of numerical method. I...