Consider the proposition:
∀m, n in R, m > n =⇒ m
2 > n
2
(a) State the negation of the proposition.
(b) Prove that the original proposition is false.
(c) Suppose you rewrite the proposition:
∀m, n in A, m > n =⇒ m
2 > n
2
What is the largest collection (set) of real numbers A for which the proposition is true?