Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Precession of Isolated Neutron Stars   I summarize the evidence for precession of isolated neutron stars and
theoretical effort to understand the observations. I discuss factors that might
set the precession period, describe constraints on the material properties of
the crust, and conclude with a brief discussion of possible sources of stress
that would deform a neutron star to the extent required.

19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int