Question

 If E is a subset of equation with standard metric, then show that equation.

09 Jan 2026
Answer :
Word Count : 127
Let (E \subset \mathbb{R}) with the standard metric. We show that ((\overline{E})^{c} = (E^{c})^{\circ}). First, let (x \in (\overline{E})^{c}). Then (x \notin \overline{E}). By definition of closure, this means there exists (\varepsilon > 0) such that the open ball
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