Lecture
Coxeter groups: reflections, rotations
Description
This lecture provides a review of Coxeter groups, focusing on the definition of a Coxeter group as a finite group of orthogonal transformations generated by reflections. It covers the classification of finite groups of orthogonal transformations in R^3, the root system of a Coxeter group, positive roots, simple roots, and fundamental regions. The lecture also discusses simple reflections as generators of a Coxeter group and fundamental weights.
Official source
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