On Nekov\'{a}\v{r}'s heights, exceptional zeros and a conjecture of Mazur-Tate-Teitelbaum

TL;DR

This paper investigates the relationship between the second derivative of the Mazur-Tate-Teitelbaum p-adic L-function and Nekovár's height pairing for elliptic curves with split multiplicative reduction, advancing understanding of exceptional zeros and related conjectures.

Contribution

It extends Nekovár's Rubin-style formula to cases with exceptional zeros and relates p-adic L-function derivatives to Nekovár's height pairing, impacting the Mazur-Tate-Teitelbaum conjecture.

Findings

Extended Rubin-style formula for exceptional zeros

Connected second derivative of p-adic L-function to Nekovár's height pairing

Provided conditions under which the order of vanishing matches the analytic rank

Abstract

Let $E/\mathbb{Q}$ be an elliptic curve which has split multiplicative reduction at a prime $p$ and whose analytic rank $r_{an}(E)$ equals one. The main goal of this article is to relate the second order derivative of the Mazur-Tate-Teitelbaum $p$-adic $L$-function $L_p(E,s)$ of $E$ to Nekov\'{a}\v{r}'s height pairing evaluated on natural elements arising from the Beilinson-Kato elements. Along the way, we extend a Rubin-style formula of Nekov\'a\v{r} (or in an alternative wording, correct another Rubin-style formula of his) to apply in the presence of exceptional zeros. Our height formula allows us, among other things, to compare the order of vanishing of $L_p(E,s)$ at $s=1$ to its (complex) analytic rank $r_{an}(E)$ assuming the non-triviality of the height pairing. This has consequences towards a conjecture of Mazur, Tate and Teitelbaum.