The Burau representation of the braid group is faithful for n = 4

Interestingly, David Graeber argued that mathematical thinking likely began through initiatives of women. Specifically tied to practices like weaving, beadwork, and tracking plant-based knowledge.

https://theanarchistlibrary.org/library/david-graeber-and-da...

	▲	killjoywashere 33 minutes ago \| parent \| next [-]
		Have a look at hyperbolic crochet as well https://en.wikipedia.org/wiki/Daina_Taimi%C5%86a https://pi.math.cornell.edu/~dtaimina/crochet/hplane.htm https://www.routledge.com/Crocheting-Adventures-with-Hyperbo...
	▲	ashivkum an hour ago \| parent \| prev [-]
		not necessarily disputing any of his conclusions, but I find his style of argument frustratingly slippery, always generalizing broadly from weak evidence

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wglb 4 hours ago | parent | prev | next [-]

Also https://www.yahoo.com/news/science/articles/99-old-mathemati.... Someone who has been at this problem for 60 years.

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slwvx 4 hours ago | parent [-]

She has a wikipedia page: https://en.wikipedia.org/wiki/Joan_Birman

	▲	axus 3 hours ago \| parent [-]
		Nice! Her experience getting a "bionic ear" at age 80 was very interesting: https://www.math.columbia.edu/~jb/my-bionic-ear.pdf

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marysminefnuf 3 hours ago | parent | prev [-]

Birman still dropping bangers at 100 is quite something. We knew 3 strands is faithful and it was assumed 4 must be true but the ramifications of this in the face of quantum computing will be really fun going forward.

	▲	vlovich123 an hour ago \| parent \| next [-]
		What are the ramifications?
	▲	WorkerBee28474 3 hours ago \| parent \| prev [-]
		99, according to Wikipedia, but yeah