Higher Ext-groups and Relatively Supercuspidal Spectra
Abstract
Relatively supercuspidal representations are analogue of supercuspidal representations in the relative Langlands program. This work studies relatively supercuspidal representations using top degree Ext-groups via the Schneider-Stuhler duality. As examples, the relatively supercuspidal spectra for the Galois case and the triple product case are determined.
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