Local-global compatibility conjecture for the Galois representations

Let FF, SS, TT, QQ, Σ\Sigma, the Hecke algebras TΣ,Q\mathbb{T}_{\Sigma,Q} and T~S(KΣ,Q)\widetilde{\mathbb{T}}^S(K_{\Sigma,Q}), and the universal deformation rings RΣ,QR_{\Sigma,Q} be as defined in the paper. Let ρΣ,Q ⁣:GFGL2(TΣ,Q)\rho_{\Sigma,Q}\colon G_F\to\operatorname{GL}_2(\mathbb{T}_{\Sigma,Q}) be the representation supplied by the Galois-representation conjecture. Local-global compatibility conjecture. For every Σ\Sigma and QQ, ρΣ,Q\rho_{\Sigma,Q} is induced from the universal representation through RΣ,QTΣ,QR_{\Sigma,Q}\twoheadrightarrow\mathbb{T}_{\Sigma,Q} and satisfies the four listed trace, diamond-operator, local deformation, and compatibility-diagram conditions. The conjecture formulates the expected compatibility between local automorphic Hecke operators and the corresponding Galois representations; many cases are known up to nilpotent ideals.

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Primary source

Srikanth B. Iyengar, Chandrashekhar B. Khare and Jeffrey Manning, “Congruence modules and the Wiles-Lenstra-Diamond numerical criterion in higher codimensions”, arXiv:2206.08212 (2024).

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