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Linearity of dimension functions for semilinear -spheres
Authors:Ikumitsu Nagasaki
Affiliation:Department of Mathematics, Graduate School of Science, Osaka University, Toyonaka 560-0043, Osaka, Japan
Abstract:In this paper, we show that the dimension function of every semilinear $G$-sphere is equal to that of a linear $G$-sphere for finite nilpotent groups $G$ of order $p^nq^m$, where $p$, $q$are primes. We also show that there exists a semilinear $G$-sphere whose dimension function is not virtually linear for an arbitrary nonsolvable compact Lie group $G$.

Keywords:Dimension function   semilinear $G$-sphere   homotopy representation
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