Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Slowly Rotating Homogeneous Stars and the Heun Equation   The scheme developed by Hartle for describing slowly rotating bodies in 1967
was applied to the simple model of constant density by Chandrasekhar and Miller
in 1974. The pivotal equation one has to solve turns out to be one of Heun's
equations. After a brief discussion of this equation and the chances of finding
a closed form solution, a quickly converging series solution of it is
presented. A comparison with numerical solutions of the full Einstein equations
allows one to truncate the series at an order appropriate to the slow rotation
approximation. The truncated solution is then used to provide explicit
expressions for the metric.

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The categories of this paper are: q-bio
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The categories of this paper are: solv-int
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The categories of this paper are: physics
28
The categories of this paper are: alg-geom
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The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: eess
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The categories of this paper are: cond-mat
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The categories of this paper are: bayes-an
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The categories of this paper are: stat
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th