The two-variable Hida deformation Iwasawa main conjecture

Let f\mathbf{f} be a Hida family of pp-ordinary pp-stabilized cusp newforms of tame level NN, and let T\mathcal{T} be the nearly ordinary Hida deformation associated with f\mathbf{f}. Fix an Ifn.ord\mathbf{I}^{\operatorname{n.ord}}_{\mathbf{f}}-basis Bf±\mathbf{B}^{\pm}_{\mathbf{f}} of the modules of Ifn.ord\mathbf{I}^{\operatorname{n.ord}}_{\mathbf{f}}-adic modular symbols MSf±\mathbf{MS}^{\pm}_{\mathbf{f}}. Assume that the conditions (NOR)(\bf{NOR}), (IRR)(\bf{IRR}) and (FIL)(\bf{FIL}) hold. Let SelQ(T)\operatorname{Sel}_{\mathbb{Q}}(\mathcal{T}) denote the Selmer group and let PD\operatorname{PD} denote Pontryagin duality. Then the Pontryagin dual SelQ(T)PD\operatorname{Sel}_{\mathbb{Q}}(\mathcal{T})^{\operatorname{PD}} is a finitely generated torsion Ifn.ord\mathbf{I}^{\operatorname{n.ord}}_{\mathbf{f}}-module. Two-variable Hida deformation Iwasawa main conjecture. One has

charIfn.ord(SelQ(T)PD)=(Lp({Bf±})),\operatorname{char}_{\mathbf{I}^{\operatorname{n.ord}}_{\mathbf{f}}}\big(\operatorname{Sel}_{\mathbb{Q}}(\mathcal{T})^{\operatorname{PD}}\big)=\big(L_p(\{\mathbf{B}^{\pm}_{\mathbf{f}}\})\big),

where Lp({Bf±})L_p(\{\mathbf{B}^{\pm}_{\mathbf{f}}\}) is a two-variable pp-adic LL-function attached to Bf±\mathbf{B}^{\pm}_{\mathbf{f}}. This is the Iwasawa main conjecture for the nearly ordinary Hida deformation associated with a Hida family; it predicts an equality between the characteristic ideal of the dual Selmer group and the principal ideal generated by the corresponding two-variable pp-adic LL-function. The supplied text does not state whether this conjecture has been proved or disproved.

Sources & referencesView supporting material

Primary source

Tadashi Ochiai and Kazuma Shimomoto, “Specialization Method in Krull Dimension two and Euler System Theory over Normal Deformation Rings”, arXiv:1706.01571 (2017).

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