The equivalents of Schur-Cohn minors for delta-operator formulated discrete-time systems

The author presents certain quantities that may be regarded as Schur-Cohn minors applicable to /spl delta/-system characteristic polynomials. For this purpose, a recently introduced tabular method for stability checking of /spl delta/-systems is extended to the complex coefficient case. The results presented pave the way for developing effective algorithms for stability checking of two-dimensional and multidimensional /spl delta/-systems.<
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