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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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Only ‘free’ measures are admissable on $F(S)$ when the inner product space $S$ is incomplete
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by D. Buhagiar and E. Chetcuti PDF
Proc. Amer. Math. Soc. 136 (2008), 919-922 Request permission

Abstract:

Using elementary arguments and without having to recall the Gleason Theorem, we prove that the existence of a nonsingular measure on the lattice of orthogonally closed subspaces of an inner product space $S$ is a sufficient (and of course, a necessary) condition for $S$ to be a Hilbert space.
References
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Additional Information
  • D. Buhagiar
  • Affiliation: Department of Mathematics, Faculty of Science, University of Malta, Msida MSD.06, Malta
  • Email: david.buhagiar@um.edu.mt
  • E. Chetcuti
  • Affiliation: Department of Mathematics, Junior College, University of Malta, Msida MSD.06, Malta
  • Email: emanuel.chetcuti@um.edu.mt
  • Received by editor(s): May 24, 2006
  • Received by editor(s) in revised form: October 11, 2006
  • Published electronically: November 30, 2007
  • Communicated by: David Preiss
  • © Copyright 2007 American Mathematical Society
    The copyright for this article reverts to public domain 28 years after publication.
  • Journal: Proc. Amer. Math. Soc. 136 (2008), 919-922
  • MSC (2000): Primary 46C05, 46C15; Secondary 46L30
  • DOI: https://doi.org/10.1090/S0002-9939-07-08982-4
  • MathSciNet review: 2361864