MIT Lie Groups Seminar
Wednesday, November 13, 2019 at 4:30pm to 5:30pm
Room : 2 - 142 182 memorial Drive, Cambridge, MA 02142
Title : Total positivity in Springer fibres
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.