TAILIEUCHUNG - Báo cáo hóa học: " Research Article Uniform Asymptotic Stability and Robust Stability for Positive Linear Volterra Difference Equations in Banach Lattices"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Uniform Asymptotic Stability and Robust Stability for Positive Linear Volterra Difference Equations in Banach Lattices | Hindawi Publishing Corporation Advances in Difference Equations Volume 2008 Article ID 598964 15 pages doi 2008 598964 Research Article Uniform Asymptotic Stability and Robust Stability for Positive Linear Volterra Difference Equations in Banach Lattices Satoru Murakami1 and Yutaka Nagabuchi2 1 Department of Applied Mathematics Okayama University of Science 1-1 Ridaicho Okayama 700-0005 Japan 2 Department of Applied Science Okayama University of Science 1-1 Ridaicho Okayama 700-0005 Japan Correspondence should be addressed to Satoru Murakami murakami@ Received 5 August 2008 Accepted 7 November 2008 Recommended by Ulrich Krause For positive linear Volterra difference equations in Banach lattices the uniform asymptotic stability of the zero solution is studied in connection with the summability of the fundamental solution and the invertibility of the characteristic operator associated with the equations. Moreover the robust stability is discussed and some stability radii are given explicitly. Copyright 2008 S. Murakami and Y. Nagabuchi. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. Introduction A dynamical system is called positive if any solution of the system starting from nonnegative states maintains nonnegative states forever. In many applications where variables represent nonnegative quantities we often encounter positive dynamical systems as mathematical models see 1 2 and many researches for positive systems have been done actively for recent developments see for example 3 and the references therein. In this paper we treat the Volterra difference equations n x n I X Q n j ixtj L1 i 0 together with n ytn 1 X Qtn j y j j TO 2 Advances in Difference Equations in a complex Banach lattice X where Q n n 0 is a sequence of compact linear operators on X satisfying the .

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