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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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The Scottish physicist and mathematician Peter Guthrie Tait began the systematic study of what would later become one of the biggest problems in knot theory: the classification of knots. Leila Sloman, Wired News, 8 Nov. 2025 These are some of the fundamental questions in the mathematical field of knot theory. Emma R. Hasson, Scientific American, 3 Oct. 2025 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 For most of their history, tie knots and knot theory developed in parallel. Matthew Hutson, The New Yorker, 10 Nov. 2023

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 5 Dec. 2025.

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