unknot
Speech parts
1. unknot - Noun
2. unknot - Verb
Meaning
To free from knots; to untie.
Source: Webster's dictionarySynonyms
Antonyms
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Examples
He settles in the kitchen because the children are asleep all over the rest of the house. I unknot his tie and offer him a cold sandwich. He raps my backside, paying attention to the bounce. I walk around him as though he were a Maypole, kissing as I go.
unravel the thread
Currently there are several well-known unknot recognition algorithms (not using invariants), but they are either known to be inefficient or have no efficient implementation.
For instance, the Alexander polynomial can be used to distinguish the trefoil knot from the figure-eight knot and the unknot (a simple loop).
Intuitively, the unknot is a closed loop of rope without a knot in it.
An unknot is the identity element with respect to the knot sum operation.