Hello everyone. I have a proof that I am having trouble beginning. Should try to solve this proof directly or by induction?
Let R be a binary relation on a set A, and let RT be the transitive closure of R . Prove that for all x and y in A, (x,y) ∈ RT if and only if there is a sequence of elements of A say x1, x2,…xn, such that x = x1, x1Rx2, x2Rx3, …, xn-1Rxn = y