We study the braided tensor structure of line operators in the topological A and B twists of
abelian 3d $\mathcal {N}= 4$ gauge theories, as accessed via boundary vertex operator …

It is easy to find algebras T∈ C in a finite tensor category C that naturally come with a lift to a
braided commutative algebra T∈ Z (C) in the Drinfeld center of C. In fact, any finite tensor …

We consider the small quantum group u_q (G), for an almost-simple algebraic group G over
the complex numbers and a root of unity q of sufficiently large order. We show that the …

Building on Retakh's approach to Ext groups through categories of extensions, Schwede
reobtained the well-known Gerstenhaber algebra structure on Ext groups over bimodules of …

We consider the small quantum group u (Gq), for an almost-simple algebraic group G over
the complex numbers and a root of unity q of sufficiently large order. We show that the …

This mini-workshop was devoted to foster the interactions between mathematicians and
mathematical physicists who are working on questions related to representation theory. This …