Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-28T23:56:29.341Z Has data issue: false hasContentIssue false

Identities in tensor products of Banach algebras

Published online by Cambridge University Press:  17 April 2009

R. J. Loy
Affiliation:
Carleton University, Ottawa, Canada.
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Let A1, A2 be Banach algebras, A1A2 their algebraic tensor product over the complex field. If ‖ · ‖α is an algebra norm on A1A2 we write A1αA2 for the ‖ · ‖α-completion of A1A2. In this note we study the existence of identities and approximate identities in A1αA2 versus their existence in A1 and A2. Some of the results obtained are already known, but our method of proof appears new, though it is quite elementary.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 1970

References

[1]Fischer, H.R., “Über eine Klasse topologischer Tensorprodukte”, Math. Ann. 150 (1963), 242258.CrossRefGoogle Scholar
[2]Gelbaum, B.R., “Tensor products and related questions”, Trans. Amer. Math. Soc. 103 (1962), 525548.CrossRefGoogle Scholar
[3]Lardy, L.J. and Lindberg, J.A. Jr, “On maximal regular ideals and identities in the tensor product of commutative Banach algebras”, Canad. J. Math. 21 (1969), 639647.CrossRefGoogle Scholar
[4]Laursen, Kjeld B., “Ideal structure in generalized group algebras”, Pacific J. Math. 30 (1969), 155174.Google Scholar
[5]Rickart, Charles E., General theory of Banach algebras (Van Wostrand, Princeton, New Jersey, 1960).Google Scholar
[6]Warner, C. Robert and Whitley, Robert, “A characterization of regular maximal ideals”, Pacific J. Math. 30 (1969), 277281.Google Scholar