Abstract

We count the number of rational elliptic curves of bounded naive height that have a rational N-isogeny, for N∈{2,3,4,5,6,8,9,12,16,18}. For some N, this is done by generalizing a method of Harron and Snowden. For the remaining cases, we use the framework of Ellenberg, Satriano and Zureick-Brown, in which the naive height of an elliptic curve is the height of the corresponding point on a moduli stack.

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