[3] Use the Zarmelo-Fraenkel axioms to show that if A is a set, then A & A (in particular use the axiom of foundation and singleton set axiom). Furthermore, show that if A and B are two sets, then either A&B or B & A (or both). [3] Use the Zarmelo-Fraenkel axioms to show that if A is a set, then A & A (in particular use the axiom of foundation and singleton set axiom). Furthermore, show that if A and B are two sets, then either A&B or B & A (or both)