Sato--Tate, cyclicity, and divisibility statistics on average for elliptic curves of small height
arXiv:math/0609144
Abstract
We obtain asymptotic formulae for the number of primes for which the reduction modulo of the elliptic curve $$ \E_{a,b} : Y^2 = X^3 + aX + b $$ satisfies certain ``natural'' properties, on average over integers and with and , where and are small relative to . Specifically, we investigate behavior with respect to the Sato--Tate conjecture, cyclicity, and divisibility of the number of points by a fixed integer .