Buzzard–Diamond–Jarvis tensor-product conjecture in the definite case

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Let FF be a totally real field, let DD be a quaternion algebra over FF, and let r‾:GF→GL2(F)\overline{r}:G_F\to\mathrm{GL}_2(\mathbb F) be a two-dimensional continuous totally odd absolutely irreducible modular Galois representation. For each finite place ww write ρ‾w=r‾∣GFw\overline{\rho}_w=\overline{r}|_{G_{F_w}}, and let SψD(F)[mr‾]S^D_{\psi}(\mathbb F)[\mathfrak m_{\overline r}] be the corresponding localized space of mod pp automorphic forms. For each ww, let πwD(r‾)\pi^D_w(\overline r) be the associated smooth admissible representation of (D⊗FFw)×(D\otimes_F F_w)^\times, with the stated Serre-weight characterization at places w∣pw\mid p. Buzzard–Diamond–Jarvis' conjecture. If r‾\overline r is modular, there is a (D⊗FAF,f)×(D\otimes_F\mathbb A_{F,f})^\times-equivariant isomorphism

SψD(F)[mr‾]≅⊗w′πwD(r‾).S^D_{\psi}(\mathbb F)[\mathfrak m_{\overline r}]\cong\otimes'_w\pi^D_w(\overline r).

At w∣pw\mid p, the representation satisfies Hom⁡GL2(OFw)(σ,πwD(ρ‾))≠0\operatorname{Hom}_{\mathrm{GL}_2(\mathcal O_{F_w})}(\sigma,\pi^D_w(\overline{\rho}))\neq0 if and only if σ∈D(ρ‾w)\sigma\in\mathscr D(\overline{\rho}_w). The source recalls this as a conjecture of Buzzard, Diamond and Jarvis; its resolution status is not specified in the supplied text.

References

Primary source

Yongquan Hu and Haoran Wang, “Multiplicity one for the mod p cohomology of Shimura curves: the tame case”, arXiv:1608.07992 (2017).

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