Daniel Tubbenhauer's Cayley-Dickson Construction of the Octonions
He's also planning to do a followup on The Freudenthal–Tits magic square.
See also John Baez's Octonions Review.
I was wondering idly whether it is possible to make sense of all this purely in terms of symmetries of graphs of functions, a la Halmos' treatment in the book Measure Theory See Lewis Carroll - Crocodile-Story.
The indistinct hand-written annotation on the limits is possibly connected with the hand-written double-tick marks at the foot of Page 13.
Toby doing Complex Numbers Bob Ross Style:
I saw this while I was on the streets in San Jose, Costa Rica, and it just seemed a bit weird at the time!
Subscribe to Tibees.
Octonions are the thing, apparently. Now even Amazon are selling them:
See also F4 (Symmetry Group) and Regular 4-polytope (24 cell):
Comments
Post a Comment