News of the WeekKNOT THEORY

Loopy Solution Brings Infinite Relief

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Science  09 Feb 2001:
Vol. 291, Issue 5506, pp. 965
DOI: 10.1126/science.291.5506.965a

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Mathematicians have finally made their first stab at figuring out how long it takes to untie a knot. The answer, for one key class of knots, is "not forever"--and even that comes with a huge string attached. Still, knot researchers are delighted.