We show that a free graded commutative Banach algebra over a (purely odd) Banach space is a Banach-Grassmann algebra in the sense of Jadczyk and Pilch if and only if is infinite-dimensional. Thus, a large amount of new examples of separable Banach-Grassmann algebras arise in addition to the only one example previously known due to A. Rogers.
Si mostra che un'algebra di Banach libera graduato-commutativa su uno spazio di Banach puramente dispari è un'algebra di BanachGrassmann nel senso di Jadczyk e Pilch se e solo se ha dimensione infinita. É quindi possibile ottenere un gran numero di nuovi esempi di algebre di Banach-Grassmann separabili, in aggiunta all'unico esempio precedentemente noto, dovuto ad A. Rogers.
@article{RLIN_1992_9_3_3_223_0,
author = {Vladimir G. Pestov},
title = {General construction of Banach-Grassmann algebras},
journal = {Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni},
volume = {3},
year = {1992},
pages = {223-231},
zbl = {0745.46050},
mrnumber = {1186918},
language = {en},
url = {http://dml.mathdoc.fr/item/RLIN_1992_9_3_3_223_0}
}
Pestov, Vladimir G. General construction of Banach-Grassmann algebras. Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni, Tome 3 (1992) pp. 223-231. http://gdmltest.u-ga.fr/item/RLIN_1992_9_3_3_223_0/
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