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Transactions of the American Mathematical Society

Published by the American Mathematical Society since 1900, Transactions of the American Mathematical Society is devoted to longer research articles in all areas of pure and applied mathematics.

ISSN 1088-6850 (online) ISSN 0002-9947 (print)

The 2024 MCQ for Transactions of the American Mathematical Society is 1.48 .

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Connected finite loop spaces with maximal tori
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by J. M. Møller and D. Notbohm
Trans. Amer. Math. Soc. 350 (1998), 3483-3504
DOI: https://doi.org/10.1090/S0002-9947-98-02247-8

Abstract:

Finite loop spaces are a generalization of compact Lie groups. However, they do not enjoy all of the nice properties of compact Lie groups. For example, having a maximal torus is a quite distinguished property. Actually, an old conjecture, due to Wilkerson, says that every connected finite loop space with a maximal torus is equivalent to a compact connected Lie group. We give some more evidence for this conjecture by showing that the associated action of the Weyl group on the maximal torus always represents the Weyl group as a crystallographic group. We also develop the notion of normalizers of maximal tori for connected finite loop spaces, and prove for a large class of connected finite loop spaces that a connected finite loop space with maximal torus is equivalent to a compact connected Lie group if it has the right normalizer of the maximal torus. Actually, in the cases under consideration the information about the Weyl group is sufficient to give the answer. All this is done by first studying the analogous local problems.
References
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Bibliographic Information
  • J. M. Møller
  • Affiliation: Matematisk Institut, Universitetsparken 5, DK–2100 København Ø, Denmark
  • ORCID: 0000-0003-4053-2418
  • Email: moller@math.ku.dk
  • D. Notbohm
  • Affiliation: Mathematisches Institut, Bunsenstr. 3-5, 37073 Göttingen, Germany
  • Email: notbohm@cfgauss.uni-math.gwdg.de
  • Received by editor(s): July 11, 1995
  • © Copyright 1998 American Mathematical Society
  • Journal: Trans. Amer. Math. Soc. 350 (1998), 3483-3504
  • MSC (1991): Primary 55P35, 55R35
  • DOI: https://doi.org/10.1090/S0002-9947-98-02247-8
  • MathSciNet review: 1487627