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      A weakly Stegall space that is not a Stegall space

      Moors, Warren B.; Somasundaram, Sivajah
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      AMS Moors Stegall space.pdf
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      DOI
       10.1090/S0002-9939-02-06717-5
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      Moors, W.B. & Somasundaram, S. (2002). A weakly Stegall space that is not a Stegall space. In Proceedings of the Mathematical Society, 131, 647-654.
      Permanent Research Commons link: https://hdl.handle.net/10289/1269
      Abstract
      A topological space X is said to belong to the class of Stegall (weakly Stegall) spaces if for every Baire (complete metric) space B and minimal usco φ : B2X, φ is single-valued at some point of B. In this paper we show that under some additional set-theoretic assumptions that are equiconsistent with the existence of a measurable cardinal there is a Banach space X whose dual, equipped with the weak topology, is in the class of weakly Stegall spaces but not in the class of Stegall spaces. This paper also contains an example of a compact space K such that K belongs to the class of weakly Stegall spaces but ( C(K), weak) does not.
      Date
      2002-06
      Type
      Journal Article
      Publisher
      Department of Mathematics, University of Waikato
      Rights
      First published in Proceedings of the Mathematical Society in volume 131, pages 647-654, published by the American Mathematical Society. Copyright 2002, American Mathematical Society.
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      • Computing and Mathematical Sciences Papers [1452]
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