English

Congruences via modular forms

Number Theory 2021-02-03 v2 Combinatorics

Abstract

We prove two congruences for the coefficients of power series expansions in t of modular forms where t is a modular function. As a result, we settle two recent conjectures of Chan, Cooper and Sica. Additionally, we provide a table of congruences for numbers which appear in similar power series expansions and in the study of integral solutions of Apery-like differential equations.

Keywords

Cite

@article{arxiv.0912.0173,
  title  = {Congruences via modular forms},
  author = {Robert Osburn and Brundaban Sahu},
  journal= {arXiv preprint arXiv:0912.0173},
  year   = {2021}
}

Comments

8 pages, revised version, to appear in Proceedings of the AMS

R2 v1 2026-06-21T14:18:13.745Z