Abstract

A method for checking the Schur stability of interval polynomials is presented. The numbers of critical vertex and edge polynomials that are sufficient for inferring robust Schur stability are obtained. It is shown that the critical edges can be greatly reduced to the order of 2n/sup 2/.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

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