Category:Derived Sets

This category contains results about Derived Sets.
Definitions specific to this category can be found in Definitions/Derived Sets.

Let $T = \struct {S, \tau}$ be a topological space.

Let $X \subseteq S$ be a subset of $S$.

The derived set of $X$ is the set of all limit points of $X$.

It is often denoted $X'$.