Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: AR Ser: photometric observations of a Blazhko star   Photometric observations in 2010-2014 of the RR Lyrae star AR Serpentis are
presented and analyzed. Two Blazhko modulations of comparable amplitude are
detected, with the periods 89 and 108 days, and with evidence for
irregularities.

34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas