English

Rational solutions to the Variants of Erd\H{o}s- Selfridge superelliptic curves

Number Theory 2023-02-07 v4

Abstract

For the superelliptic curves of the form (x+1)(x+i1)(x+i+1)(x+k)=y (x+1) \cdots(x+i-1)(x+i+1)\cdots (x+k)=y^\ell with x,yQx,y \in \mathbb{Q}, y0y\neq 0, k3k \geq 3, 1ik1\leq i\leq k, 2,\ell \geq 2, a prime, Das, Laishram, Saradha, and Edis showed that the superelliptic curve has no rational points for e3k\ell\geq e^{3^k}. In fact, the double exponential bound, obtained in these papers is far from reality. In this paper, we study the superelliptic curves for small values of kk. In particular, we explicitly solve the above equation for 4k8.4 \leq k \leq 8.

Keywords

Cite

@article{arxiv.2105.02792,
  title  = {Rational solutions to the Variants of Erd\H{o}s- Selfridge superelliptic curves},
  author = {Pranabesh Das and Shanta Laishram and N. Saradha and Divyum Sharma},
  journal= {arXiv preprint arXiv:2105.02792},
  year   = {2023}
}

Comments

39 pages, To appear in the International Journal of Number Theory