The tempered local Langlands correspondence for rigid inner forms
The tempered local Langlands correspondence for rigid inner forms
Let be a connected, reductive, quasi-split group over the local function field , with finite central -subgroup , and let be an inner form of . Fix a Whittaker datum for . For a tempered Langlands parameter , set and let be its preimage in , where . Write for the set of tempered irreducible admissible representations of rigid inner twists of , and let denote the irreducible representations of the finite group . The tempered local Langlands correspondence conjecture. There is a finite subset and a commutative diagram
\begin{tikzcd} \Pi_{\varphi} \arrow["\iota_{\mathfrak{w}}"]{r} \arrow{d} & \operatorname{Irr}(\pi_{0}(S_{\varphi}^{+})) \arrow{d} \\ H^{1}(\mathcal{E}, Z \to G^{*}) \arrow{r} & \pi_{0}(Z(\widehat{\overline{G}})^{+})^{*} \end{tikzcd}in which the top map is a bijection, the bottom map is given by the relevant pairing, the right map assigns to each irreducible representation the restriction of its central character to , and the left map sends to the class of . Moreover, there is a unique element of such that is -generic and identifies it with the trivial irreducible representation.
Sources & referencesView supporting material
Primary source
Peter Dillery, “Rigid inner forms over local function fields”, arXiv:2008.04472 (2023).
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