Timeline for References about Hasse diagrams of root systems
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 30, 2020 at 12:56 | vote | accept | user | ||
| Feb 5, 2020 at 9:41 | answer | added | Ben McKay | timeline score: 6 | |
| Jan 30, 2016 at 11:59 | answer | added | Matthias Wendt | timeline score: 6 | |
| Jan 1, 2016 at 15:19 | comment | added | user | @HughThomas Thanks. The paper contains pictures of up to rank-6 classical root systems. | |
| Dec 31, 2015 at 14:56 | comment | added | Hugh Thomas | This paper arxiv.org/abs/1306.1593 by Ringel describes the posets for all the classical types, and has nice pictures for the exceptionals. | |
| Dec 1, 2015 at 19:20 | comment | added | Paul Levy | Sorry, between position $(i,j)$ and positions $(i-1,j)$ and $(i,j+1)$ (whenever these make sense). | |
| Dec 1, 2015 at 16:03 | comment | added | Paul Levy | For type $A_{n-1}$ just take the strictly upper-triangular part of an $n\times n$ matrix and turn it on its side so that the first upper-diagonal is horizontal and the top right-hand corner of the matrix is now at the top. Then draw edges between position $(i,j)$ and positions $(i+1,j)$ and $(i,j+1)$. For the other classical types you can do something very similar. | |
| Dec 1, 2015 at 3:30 | answer | added | JMP | timeline score: 0 | |
| Dec 1, 2015 at 1:48 | history | asked | user | CC BY-SA 3.0 |