Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Proceedings 14th International Conference on Automata and Formal
  Languages   The 14th International Conference Automata and Formal Languages (AFL 2014)
was held in Szeged, Hungary, from the 27th to the 29th of May, 2014. The
conference was organized by the Department of Foundations of Computer Science
of the University of Szeged. Topics of interest covered the theory and
applications of automata and formal languages and related areas.

5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th