On the Rellich eigendecomposition of para-Hermitian matrices and the sign characteristics of \(\ast \)-palindromic matrix polynomials

DOI10.1016/j.laa.2023.04.022zbMath1518.15017arXiv2211.15539MaRDI QIDQ6103356

Vanni Noferini, Giovanni Barbarino

Publication date: 26 June 2023

Published in: Linear Algebra and its Applications (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/2211.15539

zbMATH Keywords

sign characteristicRellich's theorempalindromic matrix polynomialanalytic eigendecompositionpara-unitary

Mathematics Subject Classification ID

Factorization of matrices (15A23) Eigenvalues, singular values, and eigenvectors (15A18) Hermitian, skew-Hermitian, and related matrices (15B57) Matrices over function rings in one or more variables (15A54)

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