Hermitian and Unitary Almost-Companion Matrices of Polynomials on Demand

We introduce the concept of the almost-companion matrix (ACM) by relaxing the non-derogatory property of the standard companion matrix (CM). That is, we define an ACM as a matrix whose characteristic polynomial coincides with a given monic and generally complex polynomial. The greater flexibility in...

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Detalhes bibliográficos

Principais autores:	Liubov A. Markovich, Agostino Migliore, Antonino Messina
Formato:	Artigo
Idioma:	Inglês
Publicado em:	MDPI AG 2023-02-01
coleção:	Entropy
Assuntos:	companion matrix almost-companion matrix hermitian matrix unitary matrix complex polynomial density matrix
Acesso em linha:	https://www.mdpi.com/1099-4300/25/2/309
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