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Proceedings of the American Mathematical Society

Published by the American Mathematical Society since 1950, Proceedings of the American Mathematical Society is devoted to shorter research articles in all areas of pure and applied mathematics.

ISSN 1088-6826 (online) ISSN 0002-9939 (print)

The 2020 MCQ for Proceedings of the American Mathematical Society is 0.85.

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A note on invariance of spectrum for symmetric Banach *-algebras
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by Bruce A. Barnes PDF
Proc. Amer. Math. Soc. 126 (1998), 3545-3547 Request permission

Abstract:

Let $A$ be a symmetric Banach $^*$-algebra, let $B$ be a Banach algebra, and assume that $A\subseteq B$. A result is proved giving conditions which imply that every element of $A$ has the same spectrum in both $A$ and $B$.
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Additional Information
  • Bruce A. Barnes
  • Affiliation: Department of Mathematics, University of Oregon, Eugene, Oregon 97403
  • Email: barnes@darkwing.uoregon.edu
  • Received by editor(s): April 11, 1997
  • Communicated by: David R. Larson
  • © Copyright 1998 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 126 (1998), 3545-3547
  • MSC (1991): Primary 46K99, 46L05
  • DOI: https://doi.org/10.1090/S0002-9939-98-04620-6
  • MathSciNet review: 1473655