Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Arithmetic of rationaly connected quintic 3-folds over finite and
  function fields   We prove that both classical Chevalley-Warning-Ax and Tsen theorems hold for
the blowing up of a quintic 3-fold along a line of multiplicity 3. Both proofs,
which are of the same spirit than the original ones, involve the description of
this blowing-up as a subvariety of a toric variety.

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The categories of this paper are: hep-ex
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The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
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The categories of this paper are: cond-mat
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The categories of this paper are: acc-phys
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The categories of this paper are: atom-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: patt-sol
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The categories of this paper are: q-fin
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The categories of this paper are: math-ph