T. Gannon

collaborators

2 papers

math.RT2026

Classification of nondegenerate $G$ -categories (with an appendix written jointly with GermÃ¡n Stefanich)

Tom Gannon

We classify a "dense open" subset of categories with an action of a reductive group, which we call nondegenerate categories, entirely in terms of the root datum of the group. As an…

math.RT2026

The coarse quotient for affine Weyl groups and pseudo-reflection groups

Tom Gannon

We study the coarse quotient $t^{*} // W^{aff}$ of the affine Weyl group $W^{aff}$ acting on a dual Cartan $t^{*}$ for some semisimple Lie algebra. Sp…

Classification of nondegenerate G-categories (with an appendix written jointly with GermÃ¡n Stefanich)

The coarse quotient for affine Weyl groups and pseudo-reflection groups

Classification of nondegenerate $G$ -categories (with an appendix written jointly with GermÃ¡n Stefanich)