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math.AG2024
Automorphisms and deformations of regular semisimple Hessenberg varieties
Patrick Brosnan, Laura Escobar, Jaehyun Hong +4
We show that regular semisimple Hessenberg varieties can have moduli. To be precise, suppose is a regular semisimple Hessenberg variety of codimension in the flag variety $…
math.RT2024
Constructible representations and Catalan numbers
George Lusztig, Eric Sommers
We establish a connection between constructible representations (arising in the study of left cells in Weyl groups) and Catalan numbers.