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math.AG2023
Laumon parahoric local models via quiver Grassmannians
Evgeny Feigin, Martina Lanini, Alexander Pütz
Local models of Shimura varieties in type A can be realized inside products of Grassmannians via certain linear algebraic conditions. Laumon suggested a generalization which can be…
math.AG2020
Degenerate Affine Flag Varieties and Quiver Grassmannians
Alexander Pütz
We study finite dimensional approximations to degenerate versions of affine flag varieties using quiver Grassmannians for cyclic quivers. We prove that they admit cellular decompos…