Weak closure
= Weak closure
The weak closure $\overline K^w$ of $K$ is its closure in the <weak topology>. Thus $x\in\overline K^w$ exactly when every weak neighbourhood of $x$ meets $K$.
= Weak closure
The weak closure $\overline K^w$ of $K$ is its closure in the <weak topology>. Thus $x\in\overline K^w$ exactly when every weak neighbourhood of $x$ meets $K$.