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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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On residualities in the set of Markov operators on $\mathcal {C}_1$
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by Wojciech Bartoszek and Beata Kuna PDF
Proc. Amer. Math. Soc. 133 (2005), 2119-2129 Request permission

Abstract:

We show that the set of those Markov operators on the Schatten class $\mathcal {C}_1$ such that $\lim _{n \to \infty } \| P^n - Q \| = 0$, where $Q$ is one-dimensional projection, is norm open and dense. If we require that the limit projections must be on strictly positive states, then such operators $P$ form a norm dense $G_{\delta }$. Surprisingly, for the strong operator topology operators the situation is quite the opposite.
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Additional Information
  • Wojciech Bartoszek
  • Affiliation: Department of Mathematics, Gdańsk University of Technology, ul. Narutowicza 11/12, 80 952 Gdańsk, Poland
  • Beata Kuna
  • Affiliation: Department of Mathematics, Gdańsk University of Technology, ul. Narutowicza 11/12, 80 952 Gdańsk, Poland
  • Received by editor(s): May 16, 2003
  • Received by editor(s) in revised form: April 7, 2004
  • Published electronically: February 15, 2005
  • Additional Notes: The authors thank the referee for pointing out a gap in the first version of the proof of Theorem 2.6
  • Communicated by: Joseph A. Ball
  • © Copyright 2005 American Mathematical Society
    The copyright for this article reverts to public domain 28 years after publication.
  • Journal: Proc. Amer. Math. Soc. 133 (2005), 2119-2129
  • MSC (2000): Primary 46L55, 47A35; Secondary 37A55, 47B60
  • DOI: https://doi.org/10.1090/S0002-9939-05-07776-2
  • MathSciNet review: 2137879