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• On the Complement of the Richardson Orbit ﻿

[OWP-2010-09] (Mathematisches Forschungsinstitut Oberwolfach, 2010-03-13)
We consider parabolic subgroups of a general algebraic group over an algebraically closed field $k$ whose Levi part has exactly $t$ factors. By a classical theorem of Richardson, the nilradical of a parabolic subgroup $P$ ...