Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Simple Method Which Generates Infinitely Many Congruence Identities   A simple method called symbolic representation for piecewise linear functions
on the real line is introduced and used to compute the numbers of periodic
points of all periods for some such functions. Since, for every positive
integer m, the number of periodic points of minimal period m must be divisible
by m, we obtain infinitely many congruence identities.

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The categories of this paper are: cond-mat
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The categories of this paper are: mtrl-th
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The categories of this paper are: astro-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: stat
9
The categories of this paper are: nlin
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The categories of this paper are: nucl-th
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The categories of this paper are: q-bio
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The categories of this paper are: q-alg
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The categories of this paper are: ao-sci
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The categories of this paper are: adap-org
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The categories of this paper are: hep-th
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The categories of this paper are: econ
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-ex
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The categories of this paper are: cs