English

A Modular Andre-Oort Statement with Derivatives

Number Theory 2019-04-04 v6 Logic

Abstract

In unpublished notes, Pila discussed some theory surrounding the modular function jj and its derivatives. A focal point of these notes was the statement of two conjectures regarding jj, jj' and j"j": a Zilber-Pink type statement incorporating jj, jj' and j"j", which was an extension of an apparently weaker conjecture of Andre-Oort type. In this paper, I first cover some background regarding jj, jj' and j"j", mostly covering the work already done by Pila. Then I use a seemingly novel adaptation of the o-minimal Pila-Zannier strategy to prove a weakened version of Pila's "Modular Andre-Oort with Derivatives" conjecture. Under the assumption of a Schanuel-type conjecture, the central theorem of the paper implies Pila's conjecture in full generality, as well as a more precise statement on the same lines.

Cite

@article{arxiv.1702.08403,
  title  = {A Modular Andre-Oort Statement with Derivatives},
  author = {Haden Spence},
  journal= {arXiv preprint arXiv:1702.08403},
  year   = {2019}
}

Comments

Version 3 fixes a few typos and adds a discussion of uniform versions of the main results. Version 2 implements significant changes. An error was found in version 1 which undermined the result. To amend the error required the introduction of a Schanuel-type conjecture. Version 2 also adds, under the Schanuel-type conjecture, a new and stronger version of the main theorem

R2 v1 2026-06-22T18:29:43.073Z