Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Some semi-Riemannian volume comparison theorems   Lorentzian versions of classical Riemannian volume comparison theorems by
Gunther, Bishop and Bishop-Gromov, are stated for suitable natural subsets of
general semi-Riemannian manifolds. The problem is more subtle in the
Bishop-Gromov case, which is extensively discussed. For the general
semi-Riemannian case, a local version of the Gunther and Bishop theorems is
given and applied.

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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: bayes-an
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: chem-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: quant-ph
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The categories of this paper are: physics
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The categories of this paper are: acc-phys
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The categories of this paper are: stat
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The categories of this paper are: cond-mat
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The categories of this paper are: math-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: cs