Exercises relate to the following definition: Let (X, d) be a metric space. A subset D of X is said to be dense in X if cl D=X.
Let X be a nonempty set and let d be the metric of Example 3.6.2(c). Prove that no proper subset of X is dense with this metric.
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.