Engineering↗
Operations on Subspaces and Modules
Sum, intersection and quotient of subspaces, and how the analogous operations on modules over the integers require normal forms.
Every page in the KEVOS library tagged Z-module. 2 pages.
Sum, intersection and quotient of subspaces, and how the analogous operations on modules over the integers require normal forms.
Finitely generated abelian groups as integer matrix problems, and the two normal forms that answer the two basic questions about them.