The endo-parameter compatibility conjecture with the local Langlands correspondence

From papers

Let GG be the group under consideration, let Irr(G)\operatorname{Irr}(G) denote its irreducible representations, let LPG(WF)LP_G(W_F) denote the Langlands parameters for GG, and let Epar(F)\mathcal{E}_{par}(F) denote the set of endo-parameters. Consider the diagram whose top horizontal map is the local Langlands correspondence, whose bottom horizontal map is the Bushnell–Henniart map, and whose vertical maps send a representation or parameter to its associated endo-parameter or restriction to the wild inertia group PFP_F.

Endo-parameter compatibility conjecture. The diagram relating Irr(G)\operatorname{Irr}(G), LPG(WF)LP_G(W_F), Epar(F)\mathcal{E}_{par}(F), and the representations of PFP_F is commutative.

This conjecture predicts that endo-parameters extracted from full semisimple characters agree with the restrictions to wild inertia of the corresponding Langlands parameters, thereby relating the semisimple-character theory for inner forms of general linear groups to the local Langlands correspondence. Its status is not resolved in the supplied source.

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Sources & referencesView supporting material

Primary source

Daniel Skodlerack, “Semisimple characters for inner froms I: GL_n(D)”, arXiv:1703.04904 (2021).

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