Jonathan Dixon (Queen Mary College)
Friday 15th August, 12.05-12.55pm, Carslaw 159
Projectives in quantised category O
For a (quantised) hyperalgebra UK(g), let O be the category of finitely generated weight modules on which UK(b+) acts locally nilpotently. The simple modules in O are the unique irreducible quotients of Verma modules. Assuming a PBW-type basis, this talk characterises the projective modules in the characteristic p, quantum and mixed cases, and gives a BGG reciprocity result.