Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gravitational collapse of barotropic spherical fluids   The gravitational collapse of spherical, barotropic perfect fluids is
analyzed here. For the first time, the final state of these systems is studied
without resorting to simplifying assumptions - such as self-similarity - using
a new approach based on non-linear o.d.e. techniques, and formation of naked
singularities is shown to occur for solutions such that the mass function is
analytic in a neighborhood of the spacetime singularity.

8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat