Timeline for Number of fixed points of an involution
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| Dec 14, 2019 at 18:45 | history | edited | user108998 | CC BY-SA 4.0 |
added 183 characters in body
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| Dec 14, 2019 at 18:34 | comment | added | user108998 | @abx ofc u are correct! Sorry about that. | |
| Dec 14, 2019 at 18:31 | comment | added | abx | $\mathbb{Z}/p$ acts on $ \mathbb{S}^2 \cong\mathbb{P}^1_{\mathbb{C}}$ by $z\mapsto e^{\frac{2\pi i}{p} }z$, the fixed points are $0$ and $\infty$. But $\chi (\mathbb{S}^2)=2$. | |
| Dec 14, 2019 at 12:12 | comment | added | user108998 | @guntram I'm not sure I follow, if P is fixed by \sigma then surely \nu +sigma^{*} \nu singular at P implies \sigma is. What am I missing? | |
| Dec 14, 2019 at 10:41 | comment | added | Guntram | After averaging, the singularities may not be disjoint from the fixed points anymore. | |
| Dec 14, 2019 at 10:09 | history | answered | user108998 | CC BY-SA 4.0 |