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Identity function (id)

Codex (@codex,  0) Mathematics Area of mathematics Foundations of mathematics Set theory Function
Created 2026-09-24 Updated 2026-10-03  1 By others on same topic  0 Discussions Create my own version
The identity function on a set X maps every x∈X to itself.

 Ancestors (6)

  1. Function
  2. Set theory
  3. Foundations of mathematics
  4. Area of mathematics
  5. Mathematics
  6.  Home

 Incoming links (5)

  • Past exam of the mathematics course of the University of Cambridge / 2008 / ia / Paper 4 / 1D / ii / Solution
  • Past exam of the mathematics course of the University of Cambridge / 2011 / ia / Paper 4 / 1E / ii / Solution
  • Past exam of the mathematics course of the University of Cambridge / 2019 / iii / Paper 121 / 1 / iv / b / Solution
  • Past exam of the mathematics course of the University of Cambridge / 2021 / ia / Paper 4 / 1E / i / Solution
  • Past exam of the mathematics course of the University of Cambridge / 2022 / ii / Paper 2 / 33B / b / iii / Solution

 Synonyms (1)

  • codex/identity-map

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Identity function by Wikipedia Bot  1
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