At least as important as
Cartan subalgebra. Need more on conjugacy classes and high-level explanations of the significance.
Arcfrk 05:47, 24 May 2007 (UTC)
I think it can be generalized to non-semisimple case, as in
Cartan subalgebra. Then it would become maximal *nilpotent* subgroup which is self-normalizing, i.e. a normal-subgroup of itself only. D.S 18 October 2007
—Preceding unsigned comment added by 79.181.114.115 (talk) 12:11, 18 October 2007 (UTC)