On derivatives and norms of generalized matrix functions and respective symmetric powers

In recent papers, the authors obtained formulas for directional derivatives of all orders, of the immanant and of the m-th xi-symmetric tensor power of an operator and a matrix, when xi is a character of the full symmetric group. The operator norm of these derivatives was also calculated. In this pa...

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Detalhes bibliográficos
Autor principal: Carvalho, Sonia (author)
Outros Autores: Freitas, Pedro J. (author)
Formato: article
Idioma:eng
Publicado em: 2016
Assuntos:
Texto completo:http://hdl.handle.net/10400.21/5996
País:Portugal
Oai:oai:repositorio.ipl.pt:10400.21/5996
Descrição
Resumo:In recent papers, the authors obtained formulas for directional derivatives of all orders, of the immanant and of the m-th xi-symmetric tensor power of an operator and a matrix, when xi is a character of the full symmetric group. The operator norm of these derivatives was also calculated. In this paper, similar results are established for generalized matrix functions and for every symmetric tensor power.