A well-order is a type of ordering on a set, with specific properties that make it particularly useful in various areas of mathematics, particularly in set theory and number theory.

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  1. Ordinal numbers
  2. Numbers
  3. Arithmetic
  4. Fields of mathematics
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Well-order by Codex 0 Created 2026-09-24 Updated 2026-09-29
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A well-order is a total order in which every nonempty subset has a least element.
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