Bleher–Chinburg–Greenberg–Kakde–Pappas–Sharifi–Taylor pseudo-nullity conjecture for a finite character deformation

Let KK be an imaginary quadratic field in which pp splits, let χ:Gal(Q/K)Zp×\chi:\operatorname{Gal}(\overline{\mathbb{Q}}/K)\to\mathbb{Z}_p^\times be a finite continuous character, and let Γ~K\widetilde{\Gamma}_K and κ~\widetilde{\kappa} be as above. Consider the deformation χκ~1\chi\widetilde{\kappa}^{-1} and its associated Tate–Shafarevich group. The pseudo-nullity conjecture for the finite character deformation. The Zp[[Γ~K]]\mathbb{Z}_p[[\widetilde{\Gamma}_K]]-module

\Sha1(K,Dχκ~1)\Sha^1\left(K,\mathcal{D}_{\chi\widetilde{\kappa}^{-1}}\right)^\vee

is pseudo-null. The conjecture is described as a modification of the preceding pseudo-nullity conjecture and as motivation for a main result of Bleher and collaborators; the source does not state that it has been resolved.

Sources & referencesView supporting material

Primary source

Antonio Lei and Bharathwaj Palvannan, “Codimension two cycles in Iwasawa theory and tensor product of Hida families”, arXiv:1901.09301 (2020).

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