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On the K-theoretic fundamental classes of Deligne-Lusztig varieties

In this paper we express the class of the structure sheaves of the closures of Deligne--Lusztig varieties as explicit double Grothendieck polynomials in the first Chern classes of appropriate line bundles on the ambient flag variety. This is achieved by viewing such closures as degeneracy loci of morphisms of vector bundles.

preprint2020arXivOpen access
Thomas HudsonDennis Peters
math.AG
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Thomas HudsonDennis Peters

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