English

Some $q$-congruences with parameters

Number Theory 2018-12-18 v2 Combinatorics

Abstract

Let Φn(q)\Phi_n(q) be the nn-th cyclotomic polynomial in qq. Recently, the author and Zudilin provide a creative microscoping method to prove some qq-supercongruences mainly modulo Φn(q)3\Phi_n(q)^3 by introducing an additional parameter aa. In this paper, we use this creative microscoping method to confirm some conjectures on qq-supercongruences modulo Φn(q)2\Phi_n(q)^2. We also give some parameter-generalizations of known qq-supercongruences. For instance, we present further generalizations of a qq-analogue of a famous supercongruence of Rodriguez-Villegas: k=0p1(2kk)216k(1)(p1)/2(modp2)for any odd prime p. \sum_{k=0}^{p-1}\frac{{2k\choose k}^2}{16^k} \equiv (-1)^{(p-1)/2}\pmod{p^2}\quad\text{for any odd prime $p$.}

Keywords

Cite

@article{arxiv.1804.10963,
  title  = {Some $q$-congruences with parameters},
  author = {Victor J. W. Guo},
  journal= {arXiv preprint arXiv:1804.10963},
  year   = {2018}
}

Comments

12 pages, to appear in Acta Arithmetica

R2 v1 2026-06-23T01:39:23.680Z