Degenerate Affine Flag Varieties and Quiver Grassmannians
Open Access
- 4 December 2020
- journal article
- research article
- Published by Springer Nature in Algebras and Representation Theory
- Vol. 25 (1) , 91-119
Abstract
We study finite dimensional approximations to degenerate versions of affine flag varieties using quiver Grassmannians for cyclic quivers. We prove that they admit cellular decompositions parametrized by affine Dellac configurations, and that their irreducible components are normal Cohen-Macaulay varieties with rational singularities.Keywords
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