Characteristic fixed-point sets of semif
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James F. Davis; Shmuel Weinberger
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Article
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1999
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John Wiley and Sons
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English
⚖ 348 KB
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A group action is semifree if it is free away from its fixed-point set. P. A. Smith showed that when a finite group of order q acts semifreely on a sphere, the fixed set is a mod q homology sphere. Conversely, given a mod q homology sphere as a subset of a sphere, one may try to construct a group ac