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Homological invariants of the category O

Volodymyr Mazorchuk
(Uppsala University )
Seminar
Fredag, 26 marts, 2010, at 14:15-15:15, in Aud. D4 (1531-219)
Abstrakt:
I will try to describe various homological invariants of the regular block of the BGG category O. Some are elementary and some are more involved and require the Kazhdan-Lusztig combinatorics. The most interesting one seems to be the projective dimension of indecomposable tilting modules, which turns out to be given by Lusztig's a-function.
Organiseret af: CTQM/QGM
Kontaktperson: Henning Haahr Andersen