The noncommutative pp-adic LL-function interpolation conjecture for elliptic curves

Let K/KK_\infty/K be a strongly admissible pp-adic Lie extension with Galois group GG, let EE be an elliptic curve, and let Λ(G)\Lambda(G) be the Iwasawa algebra. Let RR be the set of rational primes ramifying infinitely in K/KK_\infty/K, define

LR(E/K,τ,s)=vRPv(E,τ,qvs)1,L_R(E/K,\tau,s)=\prod_{v\notin R}P_v(E,\tau,q_v^{-s})^{-1},

and, at primes vpv_p above pp, write

Pvp(E,T)=(1bvpT)(1cvpT),bvpZp×.P_{v_p}(E,T)=(1-b_{v_p}T)(1-c_{v_p}T),\qquad b_{v_p}\in\mathbb{Z}_p^\times.

For an Artin representation τ\tau of GG, let τ\tau^* be its dual, let d+(τ)d^+(\tau) and d(τ)d^-(\tau) be the dimensions of its complex-conjugation eigenspaces, let εvp(τ)\varepsilon_{v_p}(\tau) be the local epsilon factor, and let pfτp^{f_\tau} be the pp-part of its conductor. The interpolation conjecture. If EE has good ordinary reduction at all primes above pp, then there exists LEK1(Λ(G)S)\mathfrak{L}_E\in K_1(\Lambda(G)_{S^*}) such that LE(τ)\mathfrak{L}_E(\tau)\ne\infty for every Artin representation τ\tau of GG, and

LE(τ)=LR(E,τ,1)Ω+(E)d+(τ)Ω(E)d(τ)vppεvp(τ)Pvp(τ,bvp1)Pvp(τ,cvp1)bvpfτ.\mathfrak{L}_E(\tau^*)=\frac{L_R(E,\tau,1)}{\Omega_+(E)^{d^+(\tau)}\Omega_-(E)^{d^-(\tau)}}\cdot\prod_{v_p\mid p}\varepsilon_{v_p}(\tau)\cdot\frac{P_{v_p}(\tau^*,b_{v_p}^{-1})}{P_{v_p}(\tau,c_{v_p}^{-1})}\cdot b_{v_p}^{-f_\tau}.

This is the analogue for K/KK_\infty/K of the cited interpolation conjecture in noncommutative Iwasawa theory. The source provides no evidence that it has been resolved.

Sources & referencesView supporting material

Primary source

Tibor Backhausz and Gergely Zábrádi, “Algebraic functional equations and completely faithful Selmer groups”, arXiv:1405.6180 (2014).

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