simple lie algebra classification (2) show all possible coexter and Dynkin diagrams

simple lie algebra classification 2 show all possible coexter and dynkin diagrams

I show these are all all possible coexter and dynkin diagrams

0:00 start
5:47 show they must be linear independent
12:00 Dynkin diagrams must be a tree
15:00 show G2 is special, degree less than 3
18:00 show F4 is special
24:00 show E6,E7,E8 are special

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