Last week, I stood staring at the minutely precise spirals that knot and unknot on her head.
From the guardian.co.uk
Some of the solicitors are so relaxed, they unknot their bow ties.
From the independent.co.uk
On the left, the unknot, and a knot equivalent to it.
From the en.wikipedia.org
It can be more difficult to determine whether complex knots, such as the one on the right, are equivalent to the unknot.
From the en.wikipedia.org
Since the Alexander-Conway polynomial is a knot invariant, this shows that the trefoil is not equivalent to the unknot.
From the en.wikipedia.org
In fact, in four dimensions, any non-intersecting closed loop of one-dimensional string is equivalent to an unknot.
From the en.wikipedia.org
The trouble is, humanitarian crises like this one are impossible to unknot from the political conflicts that provoke them.
From the time.com
The unknot is not considered prime.
From the en.wikipedia.org
You'll unknot those muscles, brighten that smile and, with luck, avoid ending up face first in the notepad during the client meeting.
From the time.com
More examples
Unravel: become or cause to become undone by separating the fibers or threads of; "unravel the thread"
The unknot arises in the mathematical theory of knots. Intuitively, the unknot is a closed loop of rope without a knot in it. A knot theorist would describe the unknot as an image of any embedding that can be deformed, i.e. ambient-isotoped, to the standard unknot, i.e. ...
In knot theory, a loop that is not knotted; To undo (a knot)