The local-global compatibility conjecture at Taylor–Wiles level

Let (Q,(γv,1,,γv,n)vQ)(Q,(\gamma_{v,1},\dots,\gamma_{v,n})_{v\in Q}) be a Taylor–Wiles datum, let σ\sigma be an irreducible EE-representation of K0K_0, and let σ\sigma^\circ denote the associated integral lattice. Let Rploc(σ)R_p^{\operatorname{loc}}(\sigma) be the corresponding quotient of RplocR_p^{\operatorname{loc}}, let H(σ)\mathcal H(\sigma^\circ) be the Hecke algebra, and let η\eta be the indicated map from this Hecke algebra to the local deformation ring.

Local-global compatibility conjecture. The action of RplocR_p^{\operatorname{loc}} on

H(XK0U1p(Q),σ)mQ,1H_*(X_{K_0U^p_1(Q)},\sigma^\circ)_{\mathfrak m_{Q,1}}

factors through Rploc(σ)R_p^{\operatorname{loc}}(\sigma). Moreover, if hH(σ)h\in\mathcal H(\sigma^\circ) satisfies η(h)Rploc(σ)\eta(h)\in R_p^{\operatorname{loc}}(\sigma), then hh acts on

Hq0(XK0U1p(Q),σ)mQ,1H_{q_0}(X_{K_0U^p_1(Q)},\sigma^\circ)_{\mathfrak m_{Q,1}}

via η(h)\eta(h).

This is formulated as a refinement of the earlier Galois and Taylor–Wiles compatibility conjectures. It is intended to provide the local-global compatibility needed to deduce the general pp-adic local Langlands action; the supplied text gives no resolution.

Sources & referencesView supporting material

Primary source

Toby Gee and James Newton, “Patching and the completed homology of locally symmetric spaces”, arXiv:1609.06965 (2019).

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