Seminar
Representation Theory Seminar 2026 Semester 1
Organisers: Dougal Davis, Kari Vilonen, Ting Xue
Place and time: Peter Hall 162, Thursdays, 2-3PM
Please contact one of the organisers to be added to the mailing list.
5 Feb Andrei Neguț (École polytechnique fédérale de Lausanne) Extremal monomials of q-characters
Abstract: We prove a conjecture of Frenkel-Hernandez, which states that the monomials which appear in q-characters of finite-dimensional simple modules of quantum affine algebras are bounded by the orbit of the highest monomial under Chari’s braid group action. Our proof is geometric, and uses certain quiver varieties associated to semisimple Lie algebras.
30 Apr Liron Speyer (Okinawa Institute of Science and Technology)