Closures of K-orbits in the flag variety for GL(2n)
Representation Theory
2020-10-23 v4 Combinatorics
Abstract
We characterize the O_{2n} orbits in the flag variety for GL_{2n} with rationally smooth closure via a graph-theoretic criterion. We also give a necessary pattern avoidance criterion for rational smoothness and conjecture its sufficiency.
Keywords
Cite
@article{arxiv.1107.0284,
title = {Closures of K-orbits in the flag variety for GL(2n)},
author = {William M. McGovern},
journal= {arXiv preprint arXiv:1107.0284},
year = {2020}
}
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5 pages