Power factorization in Banach algebras with a bounded approximate identity
Graham Allan, Allan Sinclair (1976)
Studia Mathematica
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Graham Allan, Allan Sinclair (1976)
Studia Mathematica
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David Johnson, Charles Lahr (1982)
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Yu. V. Selivanov (1996)
Extracta Mathematicae
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Gustavo Corach, Fernando Suárez (1987)
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Jitka Křížková, Pavla Vrbová (1974)
Commentationes Mathematicae Universitatis Carolinae
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José Galé (1988)
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V. Montesinos, J. R. Torregrosa (1991)
Collectanea Mathematica
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In this paper we prove that the geometrical notions of Rotundity and Uniform Rotundity of the norm in a Banach space are stable for the generalized Banach products.
C. Read (2000)
Studia Mathematica
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There has been a considerable search for radical, amenable Banach algebras. Noncommutative examples were finally found by Volker Runde [R]; here we present the first commutative examples. Centrally placed within the construction, the reader may be pleased to notice a reprise of the undergraduate argument that shows that a normed space with totally bounded unit ball is finite-dimensional; we use the same idea (approximate the norm 1 vector x within distance η by a “good” vector ; then...