Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Jacob's ladders, crossbreeding in the set of $\zeta$-factorization
  formulas and selection of families of $\zeta$-kindred real continuous
  functions   In this paper we introduce the notion of $\zeta$-crossbreeding in a set of
$\zeta$-factorization formulas and also the notion of complete hybrid formula
as the final result of that crossbreeding. The last formula is used as a
criterion for selection of families of $\zeta$-kindred elements in class of
real continuous functions.
  Dedicated to recalling of Gregory Mendel's pea-crossbreeding.

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The categories of this paper are: atom-ph
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The categories of this paper are: adap-org
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The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
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The categories of this paper are: quant-ph
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The categories of this paper are: econ
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The categories of this paper are: ao-sci
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The categories of this paper are: cmp-lg
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The categories of this paper are: funct-an
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The categories of this paper are: nlin
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The categories of this paper are: q-alg
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The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-th
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-ph
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The categories of this paper are: cond-mat