Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: CTA Contributions to the 34th International Cosmic Ray Conference
  (ICRC2015)   List of contributions from the CTA Consortium presented at the 34th
International Cosmic Ray Conference, 30 July - 6 August 2015, The Hague, The
Netherlands.

27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom