TOTAL POSITIVITY IN SPRINGER FIBRES
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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.
Date issued
2021Department
Massachusetts Institute of Technology. Department of MathematicsJournal
Quarterly Journal of Mathematics
Publisher
Oxford University Press (OUP)