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Timeline for free action on contractible spaces

Current License: CC BY-SA 3.0

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Apr 29, 2014 at 18:31 answer added Jeremy Rickard timeline score: 6
Apr 29, 2014 at 16:46 comment added Jeremy Rickard @FernandoMuro: Ah, right. So "conjugate by an element of $G$" versus "conjugate by an element of $\operatorname{Aut}(E)$". Yes, I guess both are reasonable interpretations of the question.
Apr 29, 2014 at 16:40 comment added Fernando Muro @JeremyRickard Thanks, I thought that 'conjugated' meant twisted by inner automorphisms.
Apr 29, 2014 at 16:36 comment added Jeremy Rickard @FernandoMuro: My understanding of the question may be different to yours, but aren't they conjugate by $x\mapsto -x$? But what about $\mathbb{Z}$ acting on a copy of $\mathbb{R}$ with little blobs around each integer, by $x\mapsto x+n$ and $x\mapsto x+2n$?
Apr 29, 2014 at 16:35 answer added Tom Goodwillie timeline score: 17
Apr 29, 2014 at 16:25 comment added Fernando Muro I may be misunderstanding the question (namely, the use of 'conjugated'), but whay about $\mathbb Z$ acting on $\mathbb R$ by $x\circ n=x+n$ and $x\bullet n=x-n$?
Apr 29, 2014 at 16:21 history asked Ilias A. CC BY-SA 3.0