Two-variable Iwasawa main conjecture for a Coleman family

Let F\mathbb{F} be a Coleman family over Λ(k0;r)\Lambda_{(k_0;r)} with slope sQ0s\in\mathbb{Q}_{\geq 0}, let hZh\in\mathbb{Z} satisfy hsh\geq s, and let T(Λ(k0;r))2\mathbb{T}\cong(\Lambda_{(k_0;r)})^{\oplus 2} be the associated Galois representation. Fix an Λ(k0;r),OK\Lambda_{(k_0;r),\mathcal{O}_K}-basis Ξ±\Xi^\pm of MS(Λ(k0;r),OK)±\mathbb{MS}(\Lambda_{(k_0;r),\mathcal{O}_K})^\pm, and assume that the residual representation ρ:GQGL2(Fp)\overline{\rho}:G_{\mathbb{Q}}\to\operatorname{GL}_2(\overline{\mathbb{F}}_p) associated to the family is irreducible on GQpG_{\mathbb{Q}_p}. Let Λ(k0;r),OK^ZpΛcyc\Lambda_{(k_0;r),\mathcal{O}_K}\widehat\otimes_{\mathbb{Z}_p}\Lambda_{\mathrm{cyc}} be the two-variable coefficient algebra, let Z(1)\mathcal{Z}(1) be the first Euler-system layer, and let QΣ\mathbb{Q}_\Sigma be the maximal extension of Q\mathbb{Q} unramified outside the specified finite set Σ\Sigma. Two-variable Iwasawa main conjecture for a Coleman family. The module

H2(QΣ/Q,(T^ZpΛcyc)(1))H^2\left(\mathbb{Q}_\Sigma/\mathbb{Q},(\mathbb{T}\widehat\otimes_{\mathbb{Z}_p}\Lambda^\sharp_{\mathrm{cyc}})^*(1)\right)

is torsion, and

char(H1(QΣ/Q,(T^ZpΛcyc)(1))/(Λ(k0;r),OK^ZpΛcyc)Z(1))=char(H2(QΣ/Q,(T^ZpΛcyc)(1))).\operatorname{char}\left(H^1\left(\mathbb{Q}_\Sigma/\mathbb{Q},(\mathbb{T}\widehat\otimes_{\mathbb{Z}_p}\Lambda^\sharp_{\mathrm{cyc}})^*(1)\right)\big/\left(\Lambda_{(k_0;r),\mathcal{O}_K}\widehat\otimes_{\mathbb{Z}_p}\Lambda_{\mathrm{cyc}}\right)\mathcal{Z}(1)\right) = \operatorname{char}\left(H^2\left(\mathbb{Q}_\Sigma/\mathbb{Q},(\mathbb{T}\widehat\otimes_{\mathbb{Z}_p}\Lambda^\sharp_{\mathrm{cyc}})^*(1)\right)\right).

The conjecture is the two-variable analogue of the Iwasawa main conjecture for a Coleman family; the supplied text presents it after constructing the relevant Euler system, but gives no resolution.

Sources & referencesView supporting material

Primary source

Tadashi Ochiai, “Iwasawa Main Conjecture for p-adic families of elliptic modular cuspforms”, arXiv:1802.06427 (2019).

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