The existence of a continuous Z2-map from a free m-dimensional Z2-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).
机构:
School of Mathematical and Statistical Sciences, University of Texas Rio Grande Valley, One West University Boulevard, Brownsville, 78520, TXSchool of Mathematical and Statistical Sciences, University of Texas Rio Grande Valley, One West University Boulevard, Brownsville, 78520, TX
机构:
Jishou Univ, Normal Coll, Dept Math & Comp Sci, Jishou 416000, Hunan, Peoples R ChinaJishou Univ, Normal Coll, Dept Math & Comp Sci, Jishou 416000, Hunan, Peoples R China
Gao Mingzhe
Bencze, Mihaly
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Jishou Univ, Normal Coll, Dept Math & Comp Sci, Jishou 416000, Hunan, Peoples R ChinaJishou Univ, Normal Coll, Dept Math & Comp Sci, Jishou 416000, Hunan, Peoples R China
Bencze, Mihaly
STUDIA UNIVERSITATIS BABES-BOLYAI MATHEMATICA,
2012,
57
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