Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Symmetry, Singularities and Integrability in Complex Dynamics IV:
  Painleve Integrability of Isotropic Cosmologies   We apply the results of singularity analysis to the isotropic cosmological
models in general relativity and string theory with a variety of matter terms.
For some of these models the standard Painlev\'{e} test is sufficient to
demonstrate integrability or nonintegrability in the sense of Painlev\'{e}. For
others of these models it is necessary to use a less algorithmic procedure.

28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas