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math.RT2026
Reductive monoids over general base
Jingren Chi, Simon Jacques
We develop a theory of affine algebraic monoids over general base schemes whose unit groups are split reductive groups. Our main result is a classification theorem for such objects…
math.RT2026
An overview of the geometry of Kottwitz-Viehmann varieties
Jingren Chi
This is an update of an expository article on the geometrization of orbital integrals of spherical Hecke functions on reductive groups over non-archimedean local fields, appeared i…