An intrinsic hyperboloid approach for Einstein Klein–Gordon equations

Convergence of an Approach for Solving Fredholm Functional Integral Equations

In this work, we give a product Nyström method for solving a Fredholm functional integral equation (FIE) of the second kind. With this method solving FIE reduce to solving an algebraic system of equations. Then we use some theorems to prove the existence and uniqueness of the system. Finally we investigate the convergence of the method.

Modified Einstein equations

Standard general relativity fails to take into account the changes in coordinates induced by the variation of metric in the Hilbert action principle. We propose to include such changes by introducing a fundamental compensating tensor field uniquely associated with any given coordinatization procedure.

Einstein-yang/mills Equations

Spherically symmetric solutions to the Einstein-Yang/Mills equations with gauge group SU (2) have been investigated by many authors, c.f. [1-8]. These equations take the form of a second order ordinary differential equation for the connection coeffici ent w, coupled to a first order equation for the metric coefficient A, (together with a de-coupled first-order equation for the metric coefficien...

An Approach for Solving Fuzzy Fredholm Integro-Difference Equations with Mixed Argument

An efficient approach for availability analysis through fuzzy differential equations and particle swarm optimization

This article formulates a new technique for behavior analysis of systems through fuzzy Kolmogorov's differential equations and Particle Swarm Optimization. For handling the uncertainty in data, differential equations have been formulated by Markov modeling of system in fuzzy environment. First solution of these derived fuzzy Kolmogorov's differential equations has been found by Runge-Kutta four...