Properties of Cohomologically Induced Modules
Part of the Mathematics: Theory & Applications book series (MTA)
In this chapter we review the basic properties of the (g, K)-modules obtained by cohomological induction. These properties are roughly as follows: let Z be an (g, L ⋂ K)-module with infinitesimal character λ. Then the cohomologically induced modules have g-infinitesimal character λ + ρ(u), where ρ(u) is the half sum of roots corresponding to u. Under appropriate dominance conditions, they are:
nonzero only in the middle degree S, and moreover RS (Z) ≔ Ls(Z);
irreducible if Z is irreducible;
unitary if Z is unitary.
KeywordsSpectral Sequence Natural Isomorphism Cartan Subalgebra Adjoint Action Good Range
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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© Birkhäuser Boston 2006