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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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Tucker-Ky Fan colorings
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by K. S. Sarkaria PDF
Proc. Amer. Math. Soc. 110 (1990), 1075-1081 Request permission

Abstract:

The existence of a continuous ${{\mathbf {Z}}_2}$-map from a free $m$-dimensional ${{\mathbf {Z}}_2}$-simplicial complex $E$ to the $(m - 1)$-dimensional antipodal sphere ${S^{m - 1}}$ is characterized by means of an enumerative combinatorial criterion involving a coloring of the vertices of $E$. The Borsuk-Ulam theorem, 1933, and the combinatorial lemmas of Tucker, 1945, and Ky Fan, 1952, are easy consequences of this result for the case $|E| = {S^m}$.
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Additional Information
  • © Copyright 1990 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 110 (1990), 1075-1081
  • MSC: Primary 57N10; Secondary 05C15, 57M05
  • DOI: https://doi.org/10.1090/S0002-9939-1990-1004424-7
  • MathSciNet review: 1004424