Extreme invariant operators

Reich, Simeon

Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali, Série 8, Tome 55 (1973) no. 1-2, pp. 31-36.

Résumé

Dato un semigruppo ammissibile a sinistra che opera su uno spazio di Banach $E$, si considera il problema di caratterizzare gli elementi estremi della sfera unitaria degli operatori lineari invarianti che mostrano $E$ in un altro spazio di Banach. Sono date soluzioni per gli spazi $L$ e per certi spazi di Lindenstrauss.

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