Timeline for Exact sequences of permutational representations?
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| S Apr 30, 2022 at 12:08 | history | suggested | The Amplitwist | CC BY-SA 4.0 |
fixed broken link to springerlink.com
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| Apr 30, 2022 at 11:18 | review | Suggested edits | |||
| S Apr 30, 2022 at 12:08 | |||||
| Dec 16, 2009 at 7:09 | comment | added | Greg Kuperberg | I don't want to extend the "answer itself" further, but let me briefly add this. There is a tiling of the projective plane by three squares with an $S_4$ action that comes from the surface of the cube. We can obtain Leonid's third example over $\mathbb{Z}/2$ by modifying the CW cohomology of this projective plane. I concede that I do not see a natural CW model for this example with coefficients in $\mathbb{Z}$. It may not be hard to contrive a CW model over $\mathbb{Z}$ for this case, but that is not the best answer. | |
| Dec 13, 2009 at 0:47 | history | edited | Greg Kuperberg | CC BY-SA 2.5 |
Extended answer with reference
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| Dec 11, 2009 at 3:38 | history | edited | Greg Kuperberg | CC BY-SA 2.5 |
deleted 9 characters in body
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| Dec 11, 2009 at 3:33 | history | answered | Greg Kuperberg | CC BY-SA 2.5 |