# \#knot-theory

**URL:** https://scanalyst.fourmilab.ch/tag/knot-theory/1981.md

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## [Knot or Not? — The Tangled Topic of Knot Theory](https://scanalyst.fourmilab.ch/t/knot-or-not-the-tangled-topic-of-knot-theory/3697)

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**Author:** [@johnwalker](https://scanalyst.fourmilab.ch/u/johnwalker)\
**Replies:** 1\
**Last updated:** [4 September 2023 13:25 UTC](https://scanalyst.fourmilab.ch/t/knot-or-not-the-tangled-topic-of-knot-theory/3697 "2023-09-04T13:25:25Z")

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One of the most thorny problems in knot theory is that of knot equivalence: determining if two knots made in a closed loop can be transformed into one another by a series of moves which do not involve cutti…

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## [Can You Actually Make Borromean Rings?](https://scanalyst.fourmilab.ch/t/can-you-actually-make-borromean-rings/1397)

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**Author:** [@johnwalker](https://scanalyst.fourmilab.ch/u/johnwalker)\
**Replies:** 0\
**Last updated:** [19 May 2022 13:53 UTC](https://scanalyst.fourmilab.ch/t/can-you-actually-make-borromean-rings/1397 "2022-05-19T13:53:02Z")

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Borromean rings are a configuration of closed curves in three-dimensional space in which no two individual curves are linked, but all three are linked jointly. Removing any of three causes the other two to …