Highest Weight Varieties and Narayana Numbers

Published 22 Oct 2023 in math.RT and math.CO | (2310.14302v2)

Abstract: In this exposition, we compute the hilbert series of the coordinate ring of some highest weight varieties. We also explain why Narayana numbers (and their generalizations) appear naturally in the numerator of the hilbert series of the coordinate ring of complex grassmanian Gr(d,n+d+1) and of the minimal nilpotent adjoint orbit in sl_n(C). These calculations might be related to some cluster algebra structures.

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Boming Jia

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