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On the blending of real/complex analysis with number theory. The study involves distribution of prime numbers and other problems and helps giving asymptotic estimates to these.
7
votes
1
answer
155
views
Counting matrices of bounded norm in SL_n(Z)
I'm looking for the asymptotic order of growth of the number of points in algebraic groups, such as $\mathrm{SL}_n(\mathbb{Z})$, of height/norm at most $X$, i.e. all entries are at most $X$ in absolut …
7
votes
Accepted
Counting matrices of bounded norm in SL_n(Z)
The order of growth is
$$
c_n X^{n^2 - n},
$$
where $c_n$ is a constant, explicit if we're working with the Euclidean norm. Thanks to Ofir Gorodetsky for pointing out the Duke-Rudick-Sarnak and Blom …