Timeline for An example in symplectic geometry
Current License: CC BY-SA 4.0
14 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 20, 2021 at 17:42 | vote | accept | Maria | ||
| Jan 20, 2021 at 17:42 | |||||
| Nov 18, 2020 at 22:42 | comment | added | Maria | @LSpice, I will confirm this claim, and edit my question if needed ! Thank you so much for your help and your time I'de really appreciate it ! | |
| Nov 18, 2020 at 19:27 | comment | added | LSpice | The approach you mention is, as I say, more or less the one I used, but I wind up with a different conclusion. | |
| Nov 18, 2020 at 17:22 | comment | added | Maria | @LSpice I'm sorry , i just wanted to ask you, if you have ideas how the hint given by my professor works ! But to be honest, my understanding of this was very little, since I'm a beginner in symplectic geometry | |
| Nov 18, 2020 at 4:59 | comment | added | LSpice | I'm sorry, I'm not sure what you mean by "If you could". Unless my argument (which does indeed, albeit indirectly, work with $\mu(M^{T_m})$) is wrong, this claim is false. | |
| Nov 18, 2020 at 1:22 | comment | added | Maria | Actually, this was an example given in some notes written by one of my professors, when I asked him about how to find the set $\Sigma$ , he said that he used the set of generic stabilizers (which is finite), namely the set $\lbrace T_m , m \in M \rbrace$, where $T_m$ is the stabilizer of m, and then to work with $\mu (M^{T_m})$! But I'm still confused how this works ! If you could that would be great! | |
| Nov 18, 2020 at 0:12 | comment | added | LSpice | I have been thinking about my answer, which originally purported to prove this but seems to prove something else. I can't see any way to get the diagonals of the hexagon in $\Sigma$. Could you point to a reference that claims that they are there? | |
| Nov 13, 2020 at 23:08 | answer | added | LSpice | timeline score: 4 | |
| Nov 13, 2020 at 22:25 | history | edited | LSpice | CC BY-SA 4.0 |
TeX and proofreading; deleted "no idea"
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| Nov 13, 2020 at 22:20 | history | edited | Maria | CC BY-SA 4.0 |
edited body
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| Nov 13, 2020 at 22:19 | comment | added | Maria | Oh sorry for that ! But , yes you're right, I'll fix that . | |
| Nov 13, 2020 at 22:16 | comment | added | LSpice | I think I don't understand the notation. You use $P$ for an affine space, and then write $T_p$, which presumably should be $T_P$; but then you refer to $T_p$ (which maybe equals $T_P$) for $P$ a polytope, which is not an affine space. Do you want to identify the polytope $P$ with its affine span? | |
| Nov 13, 2020 at 22:14 | comment | added | LSpice | Related: mathoverflow.net/questions/376299/… , and possibly also mathoverflow.net/questions/152589/… . | |
| Nov 13, 2020 at 21:34 | history | asked | Maria | CC BY-SA 4.0 |