Some existence theorems for functional equations and system of functional equations arising in dynamic programming

摘要

In this paper we study the existence, uniqueness and iterative approximation of solutions for a few classes of functional equations arising in dynamic programming of multistage decision processes. By using of monotone iterative technique, we also establish the existence and iterative approximation of coincidence solutions for certain kinds of system of functional equations. The results presented in this paper extend, improve and unify the results due to Bhakta and Mitra [7], Chang [10] and Liu [12] and others.