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20102026
most citedTorus actions of complexity one and their local properties

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math.AG2022

The second cohomology of regular semisimple Hessenberg varieties from GKM theory

Anton Ayzenberg, Mikiya Masuda, Takashi Sato

We describe the second cohomology of a regular semisimple Hessenberg variety by generators and relations explicitly in terms of GKM theory. The cohomology of a regular semisimple H…