English

Counting $2\times2$ integer matrices with fixed trace and determinant

Number Theory 2024-10-08 v1

Abstract

We count with a smooth weight the number of 2×22 \times 2 integer matrices with a fixed characteristic polynomial with a main term and an error term using bounds for sums of Weyl sums for quadratic roots.

Keywords

Cite

@article{arxiv.2410.04632,
  title  = {Counting $2\times2$ integer matrices with fixed trace and determinant},
  author = {Rachita Guria},
  journal= {arXiv preprint arXiv:2410.04632},
  year   = {2024}
}

Comments

6 pages

R2 v1 2026-06-28T19:10:32.728Z