Document Type

Post-Print

Publication Date

6-15-2009

Abstract

We survey some of the fundamental results on the stability and asymptoticity of linear Volterra difference equations. The method of Z-transform is heavily utilized in equations of convolution type. An example is given to show that uniform asymptotic stability does not necessarily imply exponential stabilty. It is shown that the two notions are equivalent if the kernel decays exponentially. For equations of nonconvolution type, Liapunov functions are used to find explicit criteria for stability. Moreover, the resolvent matrix is defined to produce a variation of constants formula. The study of asymptotic equivalence for difference equations with infinite delay is carried out in Section 6. Finally, we state some problems.

Document Object Identifier (DOI)

10.1016/j.cam.2008.03.023

Publication Information

Journal of Computational and Applied Mathematics

Included in

Mathematics Commons

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