“Quantization of coadjoint $GL_n$ – orbit closures for in positive characteristics”
Venerdì 20 Marzo 2026, ore 14:30 - Aula 2AB40 - Filippo Ambrosio (Friedrich-Schiller-Universität Jena)
Abstract
The closures of $GL_n$ orbits in the Hilbert nullcone of the coadjoint representation are conical affine Poisson varieties.
We classify the filtered Hamiltonian quantizations of these orbit closures when the base field is algebraically closed of characteristic $p > 0$.
We construct quantizations from certain primitive quotients of the enveloping algebra, inducing them from the stabiliser in $G$ of the Frobenius twisted p-character.
