Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Divisor Matrix, Dirichlet Series and SL(2,Z)   A representation of SL(2,Z) by integer matrices acting on the space of
analytic ordinary Dirichlet series is constructed, in which the standard
unipotent element acts as multiplication by the Riemann zeta function. It is
then shown that the Dirichlet series in the orbit of the zeta function are
related to it by algebraic equations.

1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph