Timeline for Inner automorphisms of group algebras vs. inner automorphisms of the group
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 1, 2020 at 22:58 | vote | accept | Johannes Hahn | ||
| Mar 1, 2020 at 19:35 | answer | added | bl' | timeline score: 4 | |
| Feb 23, 2020 at 15:13 | comment | added | Johannes Hahn | Just as you'd think: $Out(A) := Aut_{k\text{-Alg}}(A) / Inn(A)$ where $Inn(A)$ is the normal subgroup consisting of automorphisms that are of the form $a\mapsto uau^{-1}$ for some unit $u\in A^\times$. | |
| Feb 22, 2020 at 22:31 | comment | added | YCor | Would you recall how Out of a $k$-algebra is defined? | |
| Feb 22, 2020 at 22:25 | history | edited | Johannes Hahn | CC BY-SA 4.0 |
added 173 characters in body
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| Feb 22, 2020 at 22:17 | history | asked | Johannes Hahn | CC BY-SA 4.0 |