Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Causality violating geodesics in Bonnor's rotating dust metric   We exhibit timelike geodesic paths for a metric, introduced by Bonnor [11]
and considered also by Steadman [13], and show that coordinate time runs
backward along a portion of these geodesics.

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The categories of this paper are: alg-geom
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The categories of this paper are: eess
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The categories of this paper are: nlin
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The categories of this paper are: stat
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The categories of this paper are: acc-phys
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The categories of this paper are: math-ph
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
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The categories of this paper are: ao-sci
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The categories of this paper are: bayes-an
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The categories of this paper are: patt-sol
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The categories of this paper are: chao-dyn
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The categories of this paper are: atom-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: q-fin
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The categories of this paper are: chem-ph