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Definitionintro

Period of a string

Also called minimal period, period, periodicity of a string.

A shift p such that s[i]=s[i+p] for all valid i; equivalently, n minus the longest border.

A shift p such that s[i]=s[i+p] for all valid i; equivalently, n minus the longest border.

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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
  • one source with a locator