Show that if A ≠ ∅ them (A∪A)A ≠ A∪(AA)
Exercise take from “Una Introduccion a teoria de conjuntos (A introduction to set theory)” by Fernando Hernández Cap “set algebra” (I know,it’s a very Ugly name XD)
Exercise take from “Una Introduccion a teoria de conjuntos (A introduction to set theory)” by Fernando Hernández Cap “set algebra” (I know,it’s a very Ugly name XD)