Row or column completion of polynomial matrices of given degree

We solve the problem of characterizing the existence of a polynomial matrix of fixed degree when its eigenstructure (or part of it) and some of its rows (columns) are prescribed. More specifically, we present a solution to the row (column) completion problem of a polynomial matrix of given degree un...

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Detalhes bibliográficos
Autores: Amparan Larrabaster, Miren Agurtzane, Baragaña Gárate, Itziar, Marcaida Bengoechea, Silvia, Roca Martínez, Alicia
Tipo de documento: artigo
Data de publicação:2024
País:España
Recursos:Universidad del País Vasco
Repositório:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/71551
Acesso em linha:http://hdl.handle.net/10810/71551
Access Level:Acceso aberto
Descrição
Resumo:We solve the problem of characterizing the existence of a polynomial matrix of fixed degree when its eigenstructure (or part of it) and some of its rows (columns) are prescribed. More specifically, we present a solution to the row (column) completion problem of a polynomial matrix of given degree under different prescribed invariants: the whole eigenstructure, all of it but the row (column) minimal indices, and the finite and/or infinite structures. Moreover, we characterize the existence of a polynomial matrix with prescribed degree and eigenstructure over an arbitrary field.