Group Theory: BasicsCovers the basics of group theory, including sets, applications, and examples like permutations and rotations.
Groupes résolublesExplores solvable groups, group actions, normalizers, and stabilizers in group theory.
Group Actions on LatticesExplores group actions on lattices, emphasizing GL₂(Q) and GL₂(Ag) compatibility and alternative formulations.
Cohomology: Cross ProductExplores cohomology and the cross product, demonstrating its application in group actions like conjugation.