Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Assortative Mating: Encounter-Network Topology and the Evolution of
  Attractiveness   We model a social-encounter network where linked nodes match for reproduction
in a manner depending probabilistically on each node`s attractiveness. The
developed model reveals that increasing either the network`s mean degree or the
``choosiness`` exercised during pair-formation increases the strength of
positive assortative mating. That is, we note that attractiveness is correlated
among mated nodes. Their total number also increases with mean degree and
selectivity during pair-formation. By iterating over model mapping of parents
onto offspring across generations, we study the evolution of attractiveness.
Selection mediated by exclusion from reproduction increases mean
attractiveness, but is rapidly balanced by skew in the offspring distribution
of highly attractive mated pairs.

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The categories of this paper are: cond-mat
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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-th
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The categories of this paper are: q-alg
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The categories of this paper are: solv-int
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The categories of this paper are: econ
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The categories of this paper are: hep-lat
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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: hep-th
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The categories of this paper are: bayes-an
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The categories of this paper are: alg-geom
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-ex
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The categories of this paper are: nucl-ex
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The categories of this paper are: supr-con