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Spherical Space Forms: Homotopy Types and Self-Equivalences for the Group (ℤ/a ⋊ ℤ/b) × SL2 (p)

Published online by Cambridge University Press:  20 November 2018

Marek Golasiński  and
Daciberg Lima Gonçalves
Marek Golasiński
Affiliation:
Faculty of Mathematics and Computer Science, Nicolaus Copernicus University, Chopina 12/18, 87-100 Toruń Poland e-mail: marek@mat.uni.torun.pl
Daciberg Lima Gonçalves
Affiliation:
Department of Mathematics-IME, University of São Paulo, Caixa Postal 66.281-AG., Cidade de São Paulo, 05311-970 São Paulo, Brasil e-mail: dlgoncal@ime.usp.br
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Abstract

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Let $G=\left( \mathbb{Z}/a\rtimes \mathbb{Z}/b \right)\times \text{S}{{\text{L}}_{2}}\left( {{\mathbb{F}}_{p}} \right)$, and let $X\left( n \right)$ be an $n$-dimensional $CW$-complex of the homotopy type of an $n$-sphere. We study the automorphism group $\text{Aut}\left( G \right)$ in order to compute the number of distinct homotopy types of spherical space forms with respect to free and cellular $G$-actions on all $CW$-complexes $X\left( 2dn-1 \right)$, where $2d$ is the period of $G$. The groups $\varepsilon \left( X\left( 2dn-1 \right)/\mu \right)$ of self homotopy equivalences of space forms $X\left( 2dn-1 \right)/\mu$ associated with free and cellular $G$-actions $\mu$ on $X\left( 2dn-1 \right)$ are determined as well.

Keywords

55M3555P1520E2220F2857S17automorphism groupCW-complexfree and cellular G-actiongroup of self homotopy equivalencesLyndon-Hochschild-Serre spectral sequencespecial (linear) groupspherical space form

Information

Type
Research Article
Information
Canadian Mathematical Bulletin , Volume 50 , Issue 2 , 01 June 2007 , pp. 206 - 214
Copyright
Copyright © Canadian Mathematical Society 2007

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