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On the low-lying zeros of Hasse–Weil L-functions for elliptic curves.

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On the low-lying zeros of Hasse–Weil L-functions for elliptic curves.

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Title: On the low-lying zeros of Hasse–Weil L-functions for elliptic curves.
Author: Baier, Stephan.; Zhao, Liangyi.
Copyright year: 2008
Abstract: In this paper, we obtain an unconditional density theorem concerning the low-lying zeros of Hasse-Weil L-functions for a family of elliptic curves. From this together with the Riemann hypothesis for these L-functions, we infer the majorant of 27/14 (which is strictly less than 2) for the average rank of the elliptic curves in the family under consideration. This upper bound for the average rank enables us to deduce that, under the same assumption, a positive proportion of elliptic curves have algebraic ranks equaling their analytic ranks and finite Tate-Shafarevic group. Statements of this flavor were known previously under the additional assumptions of GRH for Dirichlet L-functions and symmetric square L-functions which are removed in the present paper.
Subject: DRNTU::Science::Mathematics::Number theory.
Type: Journal Article
Series/ Journal Title: Advances in Mathematics.
School: School of Physical and Mathematical Sciences
Version: Accepted version

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