Existence and uniqueness of a stationary and ergodic solution to stochastic recurrence equations via Matkowski’s FPT

Abstract

We establish the existence of a unique stationary and ergodic solution for systems of stochastic recurrence equations defined by stochastic self-maps on Polish metric spaces based on the fixedpoint theorem of Matkowski. The results can be useful in cases where the stochastic Lipschitz co-efficients implied by the currently used method either do not exist, or lead to the imposition ofunecessarily strong conditions for the derivation of the solution.