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Zbl 1104.35065
Zhao, Z.J.; Song, Q.K.; Zhang, J.Y.
Exponential periodicity and stability of neural networks with reaction-diffusion terms and both variable and unbounded delays. (English)
[J] Comput. Math. Appl. 51, No. 3-4, 475-486 (2006). ISSN 0898-1221

Summary: The exponential periodicity and stability of neural networks with Lipschitz continuous activation functions are investigated, without assuming the boundedness of the activation functions and the differentiability of time-varying delays, as needed in most other papers. The neural networks contain reaction-diffusion terms and both variable and unbounded delays. Some sufficient conditions ensuring the existence and uniqueness of periodic solution and stability of neural networks with reaction-diffusion terms and both variable and unbounded delays are obtained by analytic methods and inequality technique. Furthermore, the exponential converging index is also estimated. The method, which does not make use of Lyapunov functional, is simple and valid for the periodicity and stability analysis of neural networks with variable and/or unbounded delays.

MSC 2000:: *35R10 Difference-partial differential equations
92B20 General theory of neural networks

Keywords: exponential periodicity; exponential stability; reaction-diffusion terms; variable delays; unbounded delays; Lipschitz activation functions

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