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Listar por autor "Bermudo Navarrete, Sergio"
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Ponencia
A parametrization for the symbols of a Hankel type operator
Bermudo Navarrete, Sergio; Marcantognini, Stefania A. M.; Morán, María Dolores (Editorial Universidad de Sevilla, 2005)Hankel operators and their symbols, as generalized by V. Pták and P. Vrbová, are considered. In this more general framework, ...
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Tesis Doctoral
Algunas aplicaciones de los modelos funcionales de operadores en espacios de Hilbert
Bermudo Navarrete, Sergio (2003) -
Artículo
Lifting the solutions of a Toeplitz type equation; the semigroup case X = TsXT*s
Bermudo Navarrete, Sergio; Hernández Mancera, Carmen; Paúl Escolano, Pedro José (Universita del Salento, 1995)A Toeplitz operator with respect to a contractive representation {Ts} of an abelian semigroup Σ in a Hilbert space H is ...
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Artículo
Quasi-similarity of contractions having 2 x 2 a singular characteristic function
Bermudo Navarrete, Sergio; Hernández Mancera, Carmen; Paúl Escolano, Pedro José; Vasyunin, Vasily (Elsevier, 2008)LetT1:H1→H1be a completely non-unitary contraction having a 2×2 singular characteristic function Θ1; thatis, Θ1=[θi,j]i, ...