Timeline for Outer Automorphisms and the Mapping Class Group of Lie Groups
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 11, 2016 at 0:51 | vote | accept | Joseph Zambrano | ||
| Sep 6, 2016 at 19:11 | answer | added | Ryan Budney | timeline score: 4 | |
| Sep 6, 2016 at 11:26 | comment | added | Joseph Zambrano | @Misha yes, I felt it was clear that by asking for a surjective map I meant a non-bijection. | |
| Sep 6, 2016 at 9:42 | history | edited | YCor |
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| Sep 6, 2016 at 2:10 | comment | added | Allen Knutson | For $1$-connected compact $G$, $Out(G)$ is the automorphism group of its Dynkin diagram, which for $SU(2)$ (but not $SU(n>2)$) is indeed $1$. | |
| Sep 6, 2016 at 0:29 | comment | added | Misha | Why do you think $Out(SU(2))=1$? And what is exactly your question? Do you mean to ask for an example of noninjective but surjective $k$? | |
| Sep 6, 2016 at 0:24 | history | asked | Joseph Zambrano | CC BY-SA 3.0 |