English

Efficient congruencing in ellipsephic sets: the quadratic case

Number Theory 2023-09-06 v2

Abstract

In this paper, we bound the number of solutions to a quadratic Vinogradov system of equations in which the variables are required to satisfy digital restrictions in a given base. Certain sets of permitted digits, namely those giving rise to few representations of natural numbers as sums of elements of the digit set, allow us to obtain better bounds than would be possible using the size of the set alone.

Keywords

Cite

@article{arxiv.1912.04338,
  title  = {Efficient congruencing in ellipsephic sets: the quadratic case},
  author = {Kirsti D. Biggs},
  journal= {arXiv preprint arXiv:1912.04338},
  year   = {2023}
}
R2 v1 2026-06-23T12:40:37.691Z