Journal of the Ramanujan Mathematical Society
Volume 39, Issue 3, September 2024 pp. 219–224.
Counting 2 × 2 integer matrices with fixed trace and determinant
Authors:
Rachita Guria
Author institution:Department of Mathematics and Statistics, Indian Institute of Science Education and Research Kolkata.
Summary:
We count with a smooth weight the number of 2 × 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.
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