Graduate Seminar
Cohomology of the minimal class
Daniel Juteau
18 Dec 2006, 16:00 – 18:00
Let 
be a complex simple Lie group. There is a minimal non trivial nilpotent orbit in the Lie algebra of
. We compute its integral cohomology, using a spectral sequence where a Cartan matrix appears, corresponding to the subrootsystem generated by the long simple roots. This should be related to the modulo 
reduction of the Springer correspondent representation.
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