Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The cycle problem: an intriguing periodicity to the zeros of the Riemann
  zeta function   Summing the values of the real portion of the logarithmic integral of n^rho,
where rho is one of a consecutive series of zeros of the Riemann zeta function,
reveals an unexpected periodicity to the sum. This is the cycle problem.

34
The categories of this paper are: chem-ph
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The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
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The categories of this paper are: patt-sol
16
The categories of this paper are: stat
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The categories of this paper are: mtrl-th
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The categories of this paper are: funct-an
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The categories of this paper are: econ
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The categories of this paper are: hep-ex
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The categories of this paper are: eess
7
The categories of this paper are: hep-th
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The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas