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

2 comments

• wglb 2 hours ago
  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 1 hour ago
    She has a wikipedia page: https://en.wikipedia.org/wiki/Joan_Birman
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    • axus 47 minutes ago
      Nice! Her experience getting a "bionic ear" at age 80 was very interesting: https://www.math.columbia.edu/~jb/my-bionic-ear.pdf
• marysminefnuf 54 minutes ago
  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.
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  • WorkerBee28474 51 minutes ago
    99, according to Wikipedia, but yeah