Short average distribution of a prime counting function over families of elliptic curves

Sumit Giri

Research output: Contribution to journalArticlepeer-review

Abstract

Let E be an elliptic curve defined over Q and let N be a positive integer. Then, ME(N) counts the number of primes p such that the group Ep(Fp) is of order N. For a given positive integer ℓ, we study the probability of the event {ME(N)=ℓ}. In an earlier joint work with Balasubramanian, we showed that ME(N) follows the Poisson distribution when an average is taken over a family of elliptic curves with parameters A and B where [Formula presented] and [Formula presented] for a positive integer ℓ and any γ>0. In this paper, we show that for sufficiently large N, the same result holds even if we take A and B in the range [Formula presented] and [Formula presented] for any ϵ>0.

Original languageEnglish
Pages (from-to)376-408
Number of pages33
JournalJournal of Number Theory
Volume212
DOIs
StatePublished - Jul 2020
Externally publishedYes

Keywords

  • Barban-Davenport-Halberstam conjecture
  • Elliptic curve
  • Finite field
  • Group order
  • Prime k-tuple

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