Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Rotating Neutron Stars   Because of the tremendous densities that exist in the cores of neutron stars,
a significant fraction of the matter in the cores of such stars is likely to
exist in the form of hyperons. Depending on spin frequency, the hyperon content
changes dramatically in rotating neutron stars, as discussed in this paper.

25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex