by Ciro Santilli (@cirosantilli, 36)
This section is about functions that operates on arbitrary sets.
A function that maps two sets to a third set.
A Cartesian product that carries over some extra structure of the input groups.
E.g. the direct product of groups carries over group structure on both sides.

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  1. Function by signature
  2. Function (mathematics)
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Set function by Wikipedia Bot 0 1970-01-01
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