A survey of credibility theory
Fuzzy Optimization and Decision Making
Euler-Lagrange-Hamilton dynamics with fractional action
WSEAS Transactions on Mathematics
The study of some discrete IS-LM models with tax revenues and time delay
WSEAS Transactions on Mathematics
A discrete IS-LM model with tax revenues
MCBE'09 Proceedings of the 10th WSEAS international conference on Mathematics and computers in business and economics
Numerical simulations for dynamic stochastic and hybrid models of internet networks
WSEAS Transactions on Mathematics
WSEAS Transactions on Mathematics
The study of some stochastic macroeconomic models
ACACOS'12 Proceedings of the 11th WSEAS international conference on Applied Computer and Applied Computational Science
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In this paper, we study the heterogeneous duopoly with product differentiation, in which one firm is quantity setter and the other is price setter. The deterministic and stochastic models with delay are presented and fuzzy and hybrid models, as well. For the stochastic disturbance model with delay, sufficient conditions are done so that the steady state is asymptotically stable in mean and in mean square. Using programs in Maple 13 we make some numerical simulations that verify the theoretical results.