A Lyndon word is an aperiodic notation for representing a necklace.
Lyndon Word
See also
de Bruijn Sequence, Irreducible Polynomial, NecklaceExplore with Wolfram|Alpha
References
Ruskey, F. "Information on Necklaces, Lyndon Words, de Bruijn Sequences." http://www.theory.csc.uvic.ca/~cos/inf/neck/NecklaceInfo.html.Sloane, N. J. A. Sequence A001037/M0116 in "The On-Line Encyclopedia of Integer Sequences."Referenced on Wolfram|Alpha
Lyndon WordCite this as:
Weisstein, Eric W. "Lyndon Word." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/LyndonWord.html