Coxeter and Dynkin Diagrams
john (baez@math.ucr.edu)
Coxeter and Dynkin Diagrams
Posted by John Baez
Dynkin diagrams have always fascinated me. They are magically potent language — you can do so much with them!
Here’s my gentle and expository intro to Dynkin diagrams and their close relative, Coxeter diagrams:
Abstract. Coxeter and Dynkin diagrams classify a wide variety of structures, most notably finite reflection groups, lattices having such groups as symmetries, compact simple Lie groups and complex simple Lie algebras. The simply laced or...