Torsion and Divisibility

This lecture covers the concepts of torsion and divisibility in abelian groups, distinguishing important subgroups that help understand the group's structure. It explains the definitions of torsion elements, orders, and subsets related to torsion. The lecture also discusses p-divisible groups, where every element has a multiple in the group, contrasting with the notion of torsion. It concludes with an overview of p-abelian groups.