Duality for Ext-groups and extensions of discrete series for graded Hecke algebras
| Authors | |
|---|---|
| Publication date | 05-2016 |
| Journal | Advances in Mathematics |
| Volume | Issue number | 294 |
| Pages (from-to) | 410–453 |
| Organisations |
|
| Abstract | In this paper, we study extensions of graded affine Hecke algebra modules. In particular, based on an explicit projective resolution on graded affine Hecke algebra modules, we prove a duality result for Ext-groups. This duality result with an Ind-Res resolution gives an algebraic proof of the fact that all higher Ext-groups between a tempered module and a discrete series vanish. |
| Document type | Article |
| Language | English |
| Published at |
https://doi.org/10.1016/j.aim.2016.03.002
(Final published version)
|
| Permalink to this page | |