MIT Lie Groups Seminar

Wednesday, November 13, 2019 at 4:30pm to 5:30pm

Room : 2 - 142 182 memorial Drive, Cambridge, MA 02142

Featured Speaker :  George Lusztig (MIT Mathematics)

Title :  Total positivity in Springer fibres

Abstract : 

Let $u$ be a unipotent element in the totally positive part of a complex reductive group.  We consider the intersection of the Springer fibre at $u$ with the totally positive part of the flag manifold.  We show that this intersection has a natural cell decomposition which is part of the cell decomposition (Rietsch) of the totally positive flag manifold.




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