Covers the concepts of limits and colimits in the category of Topological Spaces, emphasizing the relationship between colimit and limit constructions and adjunctions.
Explores divisibility and torsion in group theory, focusing on defining a functor that preserves divisibility.
Delves into the categorical framework for group actions and the correspondence between G-actions on c and functors from BG to C.
Explores invariant definitions in sets, groups, and automorphisms, including p-divisible groups and free abelian groups.
Explores natural transformations in group theory and category theory, emphasizing functor composition and morphism composition.
