Mathematics – Representation Theory
Scientific paper
2008-06-20
Transform. Groups 15 (2010), 1--45
Mathematics
Representation Theory
Minor changes, extra sections on Kostant modules and rigidity of cell modules added
Scientific paper
10.1007/s00031-010-9079-4
This is the second of a series of four articles studying various
generalisations of Khovanov's diagram algebra. In this article we develop the
general theory of Khovanov's diagrammatically defined "projective functors" in
our setting. As an application, we give a direct proof of the fact that the
quasi-hereditary covers of generalised Khovanov algebras are Koszul.
Brundan Jonathan
Stroppel Catharina
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