Note on operational quantities and Mil'man isometry spectrum

  1. González Ortiz, Manuel
  2. Martinón Cejas, Antonio
Aldizkaria:
Revista de la Academia Canaria de Ciencias: = Folia Canariensis Academiae Scientiarum

ISSN: 1130-4723

Argitalpen urtea: 1991

Alea: 3

Zenbakia: 1

Orrialdeak: 103-111

Mota: Artikulua

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Beste argitalpen batzuk: Revista de la Academia Canaria de Ciencias: = Folia Canariensis Academiae Scientiarum

Laburpena

In this note, using Mil 'man isometry spectrum and some Tsirelson-like examples of Banach spaces, due to Figiel and Johnson, and Schlumprecht, we show that two operational quantities that have been used to characterize upper semi-Fredholm operators, are not equivalent.

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