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Results tagged with category-o
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user 9970
Questions related to the Bernstein-Gelfand-Gelfand category O and generalizations
2
votes
1
answer
243
views
Springer Action on Centre of Parabolic Category O (after Brundan)
I recently learned of a result of Brundan describing the centre of the regular block of parabolic category $\mathcal{O}$ for $\mathfrak{gl}_{n}$ as the cohomology of a corresponding Springer fibre (av …
- 44.7k
5
votes
1
answer
304
views
Endomorphisms in Category O and Schubert Classes
Let $\mathfrak{g}\supset \mathfrak{b}\supset \mathfrak{h}$ be a complex semisimple Lie algebra, with choice of Borel and Cartan subalgebras, $W$ the Weyl group.
W. Soergel's 'Endomorphismensatz' all …
- 44.7k