Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Classification of Biharmonic Curves of Cartan-Vranceanu
  3-Dimensional Spaces   In this article we characterize all biharmonic curves of the Cartan-Vranceanu
3-dimensional spaces and we give their explicit parametrizations.

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The categories of this paper are: physics
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The categories of this paper are: comp-gas
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The categories of this paper are: chao-dyn
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The categories of this paper are: cs
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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-ex
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The categories of this paper are: eess
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The categories of this paper are: math-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: stat
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The categories of this paper are: hep-lat
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The categories of this paper are: dg-ga
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The categories of this paper are: astro-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-th
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The categories of this paper are: q-alg