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arXiv · 1912.11763

An additive basis for the cohomology rings of regular nilpotent Hessenberg varieties

Makoto Enokizono·Tatsuya Horiguchi·Takahiro Nagaoka·Akiyoshi Tsuchiya
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Abstract

In this paper we construct an additive basis for the cohomology ring of a regular nilpotent Hessenberg variety which is obtained by extending all Poincar\'e duals of smaller regular nilpotent Hessenberg subvarieties. In particular, all of the Poincar\'e duals of smaller regular nilpotent Hessenberg subvarieties are linearly independent.

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Makoto Enokizono, Tatsuya Horiguchi, Takahiro Nagaoka, Akiyoshi Tsuchiya. 2019-12-26. An additive basis for the cohomology rings of regular nilpotent Hessenberg varieties. https://doi.org/10.1007/s00031-022-09763-3

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