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Euclidean algorithm

Also called Euclid's algorithm, subtractive Euclidean algorithm, division-based gcd.

Repeatedly replace (a, b) by (b, a mod b) until the remainder is zero; runs in O(log min(a, b)) steps.

Repeatedly replace (a, b) by (b, a mod b) until the remainder is zero; runs in O(log min(a, b)) steps.

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The build computes these levels from the evidence in the repository. Each row says what the next level needs. Read what the levels mean.

LadderLevelWhat the next level needs
Human proofH0 no proof
  • add a proof in proofs/ (06.5)
LeanL0 no Lean part
  • name a Lean module in the lean field (07)
VisualV0 none
  • add viz/scene.ts or a figure (10)
WritingW0 stub
  • the section The problem
  • pseudocode in The algorithm
  • complexity claims in the front matter
  • one source with a locator