Group Theory· L01
Binary operations & groups
Magmas, semigroups, monoids, and the group axioms.
Canonical content
Full Group Theory notes live on the Notes page. Legacy HTML under /legacy/group_theory/ is backup only.
What you will cover
Binary operations, magmas → semigroups → monoids → groups, with standard examples.
Visualization
Week 1 — interactive notes
Operations · magmas · semigroups · monoids · groups.
Visualization
Week 2 — subgroups & cosets