On the computation of the Cauchy index
Open Access
- 1 January 1972
- journal article
- Published by American Mathematical Society (AMS) in Quarterly of Applied Mathematics
- Vol. 29 (4), 577-582
- https://doi.org/10.1090/qam/403746
Abstract
The Cauchy index of a real rational function can be computed by evaluating the signature of a certain Hankel matrix. Alternative procedures for its computation are presented here, one of which offers greater computational simplicity.Keywords
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