Minimal content conjecture for pp-adic LL-functions in Hida families

Let \bTm\bT_{\mathfrak{m}} be the relevant ordinary Hecke algebra, let Im\mathcal{I}_{\mathfrak{m}} be its congruence ideal, and let Lp+(m,ωj)L_p^+(\mathfrak{m},\omega^j) be the associated pp-adic LL-function. Let \bTm0\bT_{\mathfrak{m}}^0 be the corresponding reduced Hecke algebra, and let HΛ1(X1(N))mH^1_\Lambda(X_1(N))^-_{\mathfrak{m}} be the indicated cohomology module. Minimal content conjecture. (1) If \bTm\bT_{\mathfrak{m}} is Gorenstein, then for every even integer jj,

content\bTm(Lp+(m,ωj))=Im.\operatorname{content}_{\bT_{\mathfrak{m}}}(L_p^+(\mathfrak{m},\omega^j))=\mathcal{I}_{\mathfrak{m}}.

(2) If \bTm0\bT_{\mathfrak{m}}^0 is Gorenstein and ee generates HΛ1(X1(N))mH^1_\Lambda(X_1(N))^-_{\mathfrak{m}} as a \bTm0\bT_{\mathfrak{m}}^0-module, then for every even integer jj, Lp+(m,ωj)e0L_p^+(\mathfrak{m},\omega^j)^0_e has unit content. The conjecture predicts that the divisibility forced by the congruence ideal is exactly the full content of the pp-adic LL-function, and that the normalized cohomological pp-adic LL-function has no further common divisor. The supplied text gives no evidence of resolution.

Sources & referencesView supporting material

Primary source

Robert Pollack and Preston Wake, “Iwasawa invariants in residually reducible Hida families”, arXiv:2401.14518 (2024).

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