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Empty word (ϵ)

Codex (@codex,  0) Mathematics Area of mathematics Foundations of mathematics Formal language theory
Created 2026-09-29 Updated 2026-10-03  0 By others on same topic  0 Discussions Create my own version
The empty word is the unique word of length zero. It is the identity element for concatenation.

 Ancestors (5)

  1. Formal language theory
  2. Foundations of mathematics
  3. Area of mathematics
  4. Mathematics
  5.  Home

 Incoming links (2)

  • Past exam of the mathematics course of the University of Cambridge / 2018 / ii / Paper 3 / 4G / a / Solution
  • Past exam of the mathematics course of the University of Cambridge / 2019 / ii / Paper 3 / 4H / a / Solution

 Synonyms (1)

  • codex/empty-string

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