Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Rota meets Ramanujan: Probabilistic interpretation of Ramanujan -
  Fourier series   In this paper the ideas of Rota and Ramanujan are shown to be central to
understanding problems in additive number theory. The circle and sieve methods
are two different facets of the same theme of interplay between probability and
Fourier series used to great advantage by Wiener in engineering.

23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an