Abstract
Given a square nonnegative matrix \(A\), a simple algorithm is suggested for constructing a stability indicator characterizing the localization of its spectrum in the unit disk. Theorems are proved which establish the possibility of using the maximum of \(1-\det(I-J)\) over all possible principal submatrices \(J\) of \(A\) as a suitable indicator and give conditions under which such a maximum can be calculated only over a certain chain of leading principal submatrices. Applied problems that need such constructions and a relationship between the obtained results and similar results established for a number of matrices of special form are considered.
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Funding
This work was financially supported by the Russian Science Foundation under grant 19-11-00338.
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Translated from Matematicheskie Zametki, 2021, Vol. 109, pp. 407-418 https://doi.org/10.4213/mzm12782.
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Razzhevaikin, V.N., Tyrtyshnikov, E.E. On the Construction of Stability Indicators for Nonnegative Matrices. Math Notes 109, 435–444 (2021). https://doi.org/10.1134/S0001434621030111
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DOI: https://doi.org/10.1134/S0001434621030111