Let $T = (X, \mathcal{T})$ be a D1106: Topological space such that
(i) | $E \subseteq X$ is a D78: Subset of $X$ |
Then
\begin{equation}
\text{int} \langle E \rangle
\subseteq E
\end{equation}
(i) | $E \subseteq X$ is a D78: Subset of $X$ |
(i) | $E \subseteq X$ is a D78: Subset of $X$ |