Electronic Journal of Differential Equations,
Vol. 2009(2009), No. 104, pp. 1-8.

Title: Error evaluation of approximate solutions for sum-difference equations
       in two variables

Author: Baburao G. Pachpatte (Aurangabad, Maharashtra, India)

Abstract:
 This article presents estimates for the approximation of
 solutions of certain sum-difference equations in two
 independent variables with given initial conditions.
 A fundamental finite difference inequality
 with explicit estimate is used to establish our results.
 
Submitted June 8, 2009. Published August 27, 2009.
Math Subject Classifications: 26D10, 39A10, 65R20, 45G10.
Key Words: Approximate solutions; sum-difference equation;
           finite difference inequality.