Bertolini–Darmon–Prasanna p-adic BSD conjecture over an imaginary quadratic field

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Let E/QE/\mathbb{Q} have good reduction at an odd prime pp, and let KK be an imaginary quadratic field satisfying the stated splitting and coprimality conditions. Let LpBDP(t)L_{\mathfrak{p}}^{\mathrm{BDP}}(t) be the square of the anticyclotomic Bertolini–Darmon–Prasanna pp-adic LL-function. Assume ran(E/K)=1r_{\mathrm{an}}(E/K)=1 and E(K)[p]=0E(K)[p]=0, and let PP generate E(K)/torsE(K)_{/\mathrm{tors}}.

Bertolini–Darmon–Prasanna p-adic BSD conjecture. One has

LpBDP(0)=(1−ap(E)p−1+p−1)2⋅#\Sha(E/K)⋅log⁡ω(P)2⋅Tam⁡(E/Q)2.L_{\mathfrak{p}}^{\mathrm{BDP}}(0)=\left(1-a_p(E)p^{-1}+p^{-1}\right)^2\cdot\#\Sha(E/K)\cdot\log_{\omega}(P)^2\cdot\operatorname{Tam}(E/\mathbb{Q})^2.

This is the anticyclotomic pp-adic analogue of BSD; the paper later invokes its pp-part under an Iwasawa main-conjecture hypothesis.

References

Primary source

Naoto Dainobu, “On p-adic L-functions of elliptic curves and the ideal class groups of the division fields”, arXiv:2405.19142 (2026).

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