Nilpotent varieties in symmetric spaces and twisted affine Schubert varieties

Published 27 Jan 2021 in math.RT and math.AG | (2101.11677v3)

Abstract: We relate the geometry of Schubert varieties in twisted affine Grassmannian and the nilpotent varieties in symmetric spaces. This extends some results of Achar-Henderson in the twisted setting. We also get some applications to the geometry of the order 2 nilpotent varieties in certain classical symmetric spaces.

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