Vol. 14, No. 5, 2020

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$p$-adic distribution of CM points and Hecke orbits I: Convergence towards the Gauss point

Sebastián Herrero, Ricardo Menares and Juan Rivera-Letelier

Vol. 14 (2020), No. 5, 1239–1290

We study the asymptotic distribution of CM points on the moduli space of elliptic curves over p, as the discriminant of the underlying endomorphism ring varies. In contrast with the complex case, we show that there is no uniform distribution. In this paper we characterize all the sequences of discriminants for which the corresponding CM points converge towards the Gauss point of the Berkovich affine line. We also give an analogous characterization for Hecke orbits. In the companion paper we characterize all the remaining limit measures of CM points and Hecke orbits.

equidistribution, elliptic curves, Hecke correspondences
Mathematical Subject Classification 2010
Primary: 11G15
Secondary: 11F32, 11S82
Received: 3 November 2018
Revised: 16 November 2019
Accepted: 6 February 2020
Published: 13 July 2020
Sebastián Herrero
Instituto de Matemáticas
Pontificia Universidad Católica de Valparaíso
Ricardo Menares
Facultad de Matemáticas
Pontificia Universidad Católica de Chile
Juan Rivera-Letelier
Mathematics Department
University of Rochester
United States