Algorithms for solving the inverse problem associated with KAK = A(s+1)

[EN] In previous papers, the authors introduced and characterized a class of matrices called {K, s+1}-potent. Also, they established a method to construct these matrices. The purpose of this paper is to solve the associated inverse problem. Several algorithms are developed in order to find all invol...

ver descrição completa

Detalhes bibliográficos
Autores: Lebtahi Ep-Kadi-Hahifi, Leila, Romero Martínez, José Oscar|||0000-0003-4081-9005, Thome, Néstor|||0000-0001-5328-6637
Formato: artículo
Fecha de publicación:2017
País:España
Recursos:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/92205
Acesso em linha:https://riunet.upv.es/handle/10251/92205
Access Level:acceso abierto
Palavra-chave:Involutory matrix
{K, s + 1}-potent matrix
Spectrum
Algorithm
Inverse problem
MATEMATICA APLICADA
INGENIERIA TELEMATICA
Descrição
Resumo:[EN] In previous papers, the authors introduced and characterized a class of matrices called {K, s+1}-potent. Also, they established a method to construct these matrices. The purpose of this paper is to solve the associated inverse problem. Several algorithms are developed in order to find all involutory matrices K satisfying KAs+1K = A for a given matrix A ¿ C n×n and a given natural number s. The cases s = 0 and s ¿ 1 are separately studied since they produce different situations. In addition, some examples are presented showing the numerical performance of the methods.