Timeline for If split algebraic groups are potentially isomorphic, are they isomorphic?
Current License: CC BY-SA 2.5
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 22, 2010 at 16:40 | comment | added | George McNinch | @Pete: yes, that is correct. | |
| Feb 25, 2010 at 16:25 | answer | added | Guntram | timeline score: 3 | |
| Feb 16, 2010 at 7:27 | comment | added | Pete L. Clark | If I am underanding things correctly now, the orthogonal group of a quadratic form will be split iff the quadratic form has maximal Witt index $\lfloor \operatorname{dim}(q)/2 \rfloor$? | |
| Feb 15, 2010 at 23:33 | comment | added | Pete L. Clark | @Kevin: Yes, I see it now. I was thinking of the three-dimensional case for part of my argument and of the > three-dimensional case for another part. | |
| Feb 15, 2010 at 23:16 | comment | added | Kevin Buzzard | Pete: I think these groups aren't going to be split in general. | |
| Feb 15, 2010 at 22:40 | vote | accept | blt | ||
| Feb 15, 2010 at 22:34 | answer | added | BCnrd | timeline score: 8 | |
| Feb 15, 2010 at 22:07 | comment | added | Pete L. Clark | Does the existence of isotropic quadratic forms over Q which are not similar give a counterexample (via the orthogonal groups)? | |
| Feb 15, 2010 at 21:58 | history | asked | blt | CC BY-SA 2.5 |