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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.

What is MCQ? The Mathematical Citation Quotient (MCQ) measures journal impact by looking at citations over a five-year period. Subscribers to MathSciNet may click through for more detailed information.

 

Un phénomène d’explosion du spectre
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by M. Houimdi PDF
Proc. Amer. Math. Soc. 117 (1993), 423-428 Request permission

Abstract:

Dans cet article on donne un exemple d’opérateur shift à poids quasinilpotent, tel que l’algébre fermée pour la topologie faible des opérateurs, engendrée par ce shift, contient un élément dont le spectre non réduit à un point. Cet exemple constitue une réponse affirmative à la question $6$ soulevée par A. L. Shields dans Weighted shift operators and analytic function theory, Topics in Operator Theory (C. Pearcy, ed.), Math. Surveys Monographs, vol. 13, Amer. Math. Soc., Providence, RI, 1974, pp. 49-128.
References
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Additional Information
  • © Copyright 1993 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 117 (1993), 423-428
  • MSC: Primary 47B37; Secondary 47A10
  • DOI: https://doi.org/10.1090/S0002-9939-1993-1111219-5
  • MathSciNet review: 1111219