Geometric structure of affine Deligne-Lusztig varieties for GL3
Geometric structure of affine Deligne-Lusztig varieties for GL3
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DOI:
10.1016/j.jalgebra.2023.02.015
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发表时间:
2021-02
影响因子:
0.9
通讯作者:
Ryosuke Shimada
中科院分区:
文献类型:
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作者:
Ryosuke Shimada
In this paper we study the geometric structure of affine Deligne-Lusztig varieties X λ (b) for GL 3 and b basic. We completely determine the irreducible components of the affine Deligne-Lusztig variety. In particular, we classify the cases where all of the irreducible components are classical Deligne-Lusztig varieties times finite-dimensional affine spaces. If this is the case, then the irreducible components are pairwise disjoint.