Stochastic, fuzzy and hybrid monetary models with delay

摘要

This paper addresses an autonomous stochastic system with delay and associated fuzzy and hybrid models, which describe a monetary system involving interest rate, investment demand and price index. We analyze the deterministic model and the stochastic model with perturbation. For the stochastic system with delay we identify the differential equations for the mean values as well as for the mean square value. The last part of the paper includes numerical simulations and conclusions.