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Reidemeister move
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
Demonstrated by Reidemeister (1927).
Noun
en math 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.
en eponyms