Given a set X and a collection T (topology) of subsets of X,
determine whether T is a topology or not.
If T is a topology, does it come from a metric? on X?
= = = 2 (3) X = {m: n = 1, 2, 3, ...}, T = {@} U{An: n = 1, 2, 3,...}, where An = {m: m = 1,2, 3, ..., n} : =
Given a set X and a collection T (topology) of subsets of X, determine whether T is a topology or not. If T is a topolog
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Given a set X and a collection T (topology) of subsets of X, determine whether T is a topology or not. If T is a topolog
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