(Solved):
If B(x, E) and B(x2, ) are open balls in (R2, d) where d is the Euclidean metric, and ...
If B(x?, E?) and B(x2, €?) are open balls in (R2, d) where d is the Euclidean metric, and if x3 E B(x?, €?) B(x?, €?); find €3 > 0 such that B(x3, €3) ? B (x?, €?) B(x?, €?). Let (X, d) be a totally bounded space and A ? X; show that (A, d|A) is totally bounded. Prove that [0, 1) and (0, 1) are equipotent.