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arXiv · 1609.08914

Hurwitz-type matrices of doubly infinite series

Alexander Dyachenko
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Abstract

This paper show that two doubly infinite series generate a totally nonnegative Hurwitz-type matrix if and only if their ratio represents an S-functions of a certain kind. The doubly infinite case needs a specific approach, since the ratios have no correspondent Stieltjes continued fraction. Another forthcoming publication (see Dyachenko, arXiv:1608.04440) offers a shorter improved version of this result as well as its application to the Hurwitz stability. Nevertheless, the proof presented here illustrates features of totally nonnegative Hurwitz-type matrices better.

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Alexander Dyachenko. 2016-08-30. Hurwitz-type matrices of doubly infinite series. https://arxiv.org/abs/1609.08914

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