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- W4313303590 abstract "Regular nilpotent Hessenberg varieties form an important family of subvarieties of the flag variety, which are often singular and sometimes not normal varieties. Like Schubert varieties, they contain distinguished points called permutation flags. In this paper, we give a combinatorial characterization for a permutation flag of a regular nilpotent Hessenberg variety to be a singular point. We also apply this result to characterize regular nilpotent Hessenberg varieties which are normal algebraic varieties." @default.
- W4313303590 created "2023-01-06" @default.
- W4313303590 creator A5051413658 @default.
- W4313303590 creator A5079056873 @default.
- W4313303590 date "2022-12-28" @default.
- W4313303590 modified "2023-09-23" @default.
- W4313303590 title "On singularity and normality of regular nilpotent Hessenberg varieties" @default.
- W4313303590 doi "https://doi.org/10.48550/arxiv.2212.13817" @default.
- W4313303590 hasPublicationYear "2022" @default.
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