Reidemeister move
English
editEtymology
editDemonstrated by Reidemeister (1927).
Noun
editReidemeister move (plural Reidemeister moves)
- (mathematics, knot theory) Any of three local moves on a link diagram: (i) twist and untwist in either direction; (ii) move one loop completely over another; (iii) move a string completely over or under a crossing.