Restricted local geometric Langlands conjecture

Let GG be a reductive group with Langlands dual cGcG, let \fL(G)\fL(G) be its loop group, and let \fL(G)Catrestr\fL(G)\operatorname{Cat}_{\operatorname{restr}} be the restricted 2-category of categories acted on by \fL(G)\fL(G). Let LScGrestr(\ocD)\operatorname{LS}^{\operatorname{restr}}_{cG}(\ocD) be the restricted moduli stack of local systems on a formal punctured disc, and let tIndCoh\Nilp\operatorname{tIndCoh}_\Nilp denote the corresponding 2-category with nilpotent singular support. Restricted local geometric Langlands conjecture. There exists an equivalence of 2-categories

\fL(G)CatrestrtIndCoh\Nilp(LScGrestr(\ocD)).\fL(G)\operatorname{Cat}_{\operatorname{restr}}\simeq \operatorname{tIndCoh}_\Nilp(\operatorname{LS}^{\operatorname{restr}}_{cG}(\ocD)).

This is the local categorical Langlands assertion in the restricted setting; the source gives no resolution evidence.

Sources & referencesView supporting material

Primary source

Dennis Gaitsgory, “Local and global Langlands conjecture(s) over function fields”, arXiv:2509.24902 (2025).

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