Zassenhaus Lemma and the Jordan Holder Theorem
This entry starts out by building to Zassenhaus’ Lemma, and finishes by proving the Jordan-Holder theorem about subnormal sequences for finite groups. Enjoy!
Lattices
Partial Orders Lattices and Some Subgroups
In this article we mostly talk about partial orders, and lattices, which are a special type of partial order. We tie it in with our discussions of subgroups before proving two distribution laws for lattices.