Generalized Schur complements and P-complementable operators

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Let A be a selfadjoint operator and P be an orthogonal projection both operating on a Hilbert space script H sign. We say that A is P-complementable if A-μP≥0 holds for some μ∈R. In this case we define I P(A)=max{μ∈R:A-μP≥0}. As a tool for computing I P(A) we introduce a natural generalization of th...

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Detalles Bibliográficos
Autores principales: Massey, Pedro Gustavo, Stojanoff, Demetrio
Formato: Articulo
Lenguaje:Inglés
Publicado: 2004
Materias:
Matemática
Completely positive maps
Hadamard product
Positive semidefinite operators
Shorted operator
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/84639
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata

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