Instruct: Identify the main and secondary category of Arxiv papers based on the titles
Query: Ab initio study of the thermodynamic properties of rare-earthmagnesium
  intermetallics MgRE (RE=Y, Dy, Pr, Tb)
1
The categories of this paper are: cs
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an