Timeline for Derivations and central extensions of some infinite dimensional simple Lie algebras in characteristic zero
Current License: CC BY-SA 4.0
13 events
| when toggle format | what | by | license | comment | |
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| S Aug 20 at 9:50 | history | bounty ended | Nathan | ||
| S Aug 20 at 9:50 | history | notice removed | Nathan | ||
| Aug 19 at 15:29 | vote | accept | Nathan | ||
| Aug 19 at 15:27 | comment | added | Salvatore Siciliano | @Denis T: Note that the mentioned paper deals with the first "two-sided Witt algebra", that is, the Lie algebra of derivations of the Laurent polynomial ring $K[x,x^{-1}]$. Thus, this is not exactly what the OP is looking for. | |
| Aug 18 at 19:02 | answer | added | Salvatore Siciliano | timeline score: 4 | |
| S Aug 17 at 18:39 | history | bounty started | Nathan | ||
| S Aug 17 at 18:39 | history | notice added | Nathan | Authoritative reference needed | |
| Aug 13 at 21:06 | comment | added | Denis T | The fact that derivations are inner is not very hard, yet I don't know a good reference. Formal rigidity of Witt algebra is usually atteibuted to Fialowski (unpublished direct calculations circa 89). There's a slightly more conceptual proof on arXiv arxiv.org/abs/1111.6625 Also you can email Dmitry Fuchs or Boris Feigin; they will (most likely) give the most comprehensive answer to your question among present day mathematicians. | |
| Aug 13 at 19:07 | comment | added | Nathan | OK, I see: thank you. | |
| Aug 13 at 19:02 | comment | added | LSpice |
Please use stars *stars*, not $\textit{TeX trickery}$ $\textit{TeX trickery}$, for italics. (Note the different fonts!) I have edited accordingly.
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| Aug 13 at 19:01 | history | edited | LSpice | CC BY-SA 4.0 |
`\textit{…}` -> `*…*`
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| Aug 13 at 17:03 | history | edited | Nathan | CC BY-SA 4.0 |
improved formatting
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| Aug 13 at 16:52 | history | asked | Nathan | CC BY-SA 4.0 |