Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Singularities of varying light speed cosmologies   We study the possible singularities of isotropic cosmological models that
have a varying speed of light as well as a varying gravitational constant. The
field equations typically reduce to two dimensional systems which are then
analyzed both by dynamical systems techniques in phase space and by applying
the method of asymptotic splittings. In the general case we find initially
expanding closed models which recollapse to a future singularity and open
universes that are eternally expanding towards the future. The precise nature
of the singularities is also discussed.

27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
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The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
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The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
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The categories of this paper are: bayes-an
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The categories of this paper are: eess
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin