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From Wikipedia |
11, 18, 25 Sep 2025
Jerzy Kocik
Coxeter groups, and an unconventional view on the unimodular group (with pictures)
Part 1: Coxeter groups (the idea)
Part 2: Modular group as a Coxeter group
Part 3: "Supermodular" group and an unexpected application
For part 1, you may consult a nicely written text by J. Baez: Coxeter and Dynkin diagrams.