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Displaying similar documents to “Sur le produit de composition”

Domaine Numérique du produit AB avec A normal

Kaadoud, Mohamed Chraïbi (2006)

Serdica Mathematical Journal

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2000 Mathematics Subject Classification: 18B30, 47A12. Let A, B be two linear operators on a complex Hilbert space H. We extend a Bouldin's result (1969) conserning W(AB) - the numerical range of the product AB. We show, when AB = BA and A is normal, than W(AB).

Théorie de l'intégrale

Stanisław Saks

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PRÉFACE.............................................. III ERRATA............................................... VIII CHAPITRE I. Fonctions de figure élémentaire. Fonctions d'ensemble. Remarques préliminaires [§ 1].. 1 Termes et notations [§ 2-4].......................... 2 Intervalle. Figure élémentaire [§ 5].......................... 5 Fonctions de figure élémentaire [§ 6].......................... 6 Fonctions continues. Oscillation [§ 7].......................... 7 Fonctions additives....