\begin{definition}[Definition:Condensation Point]
Let $T = \struct {X, \tau}$ be a [[Definition:Topological Space|topological space]].
Let $A \subseteq X$.
A '''condensation point''' of $A$ is a [[Definition:Limit Point of Set|limit point]] $x$ of $A$ such that every [[Definition:Open Set (Topology)|open set]] containing $x$ also contains an [[Definition:Uncountable Set|uncountable number]] of points of $A$.
\end{definition}
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