Timeline for Good even grading and principal Levi type

9 events

when toggle format	what		by	license	comment
Mar 21, 2022 at 12:00	history	edited	Glorfindel	CC BY-SA 4.0	broken link fixed
Oct 13, 2012 at 20:38	comment	added	Jim Humphreys		P.S. I've restated my answer, to avoid the clutter in my old versions found in the edits.
Oct 13, 2012 at 20:37	history	edited	Jim Humphreys	CC BY-SA 3.0	deleted 21 characters in body
Oct 11, 2012 at 11:23	history	edited	Jim Humphreys	CC BY-SA 3.0	edited body
Oct 11, 2012 at 11:18	history	edited	Jim Humphreys	CC BY-SA 3.0	added 470 characters in body; deleted 1 characters in body
Oct 10, 2012 at 17:13	history	edited	Jim Humphreys	CC BY-SA 3.0	added 213 characters in body
Oct 10, 2012 at 16:34	comment	added	Jim Humphreys		Yes, that gets more subtle. I know that each $e$ in the well-behaved type $A_n$ is of standard Levi type (but may not define an "even" orbit) and also has some good even grading. But my recollection is that in other types you sometimes have standard Levi type without any good even grading. I don't have Elashvili-Kac classification at hand right now to check examples.
Oct 10, 2012 at 14:06	comment	added	Alexander Braverman		Thank you! I actually know most of the above, but what I wasn't able to figure out is this: how often does it happen that for $e$ which is regular in a Levi there is no good even grading?
Oct 10, 2012 at 12:40	history	answered	Jim Humphreys	CC BY-SA 3.0