knot theory

noun

: a branch of topology concerned with the properties and classification of mathematical knots
knot theorist noun

Examples of knot theory in a Sentence

Recent Examples on the Web
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Now, with the additivity conjecture decisively struck down, the knot theory community has a wide world to explore. Leila Sloman, Quanta Magazine, 22 Sep. 2025 Mathematicians have unraveled a key conjecture about knot theory Scanning the crowd at a fancy soiree may reveal a wide array of neckties, each fastened with a highly complex mathematical object masquerading as fashion. Max Springer, Scientific American, 2 Sep. 2025 Contemporary physicists apply knot theory to quantum mechanics and the winding paths that particles take through space-time. Matthew Hutson, The New Yorker, 10 Nov. 2023 Quantum computing uses a similarly computationally difficult trick, thanks to knot theory. Eric Wolff, Discover Magazine, 13 Dec. 2010

Word History

First Known Use

1981, in the meaning defined above

Time Traveler
The first known use of knot theory was in 1981

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Cite this Entry

“Knot theory.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/knot%20theory. Accessed 4 Oct. 2025.

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