Derived Set (mathematics)
In mathematics, more specifically in point-set topology, the derived set of a subset S of a topological space is the set of all limit points of S. It is usually denoted by S′.
The concept was first introduced by Georg Cantor in 1872 and he developed set theory in large part to study derived sets on the real line.
Read more about Derived Set (mathematics): Properties, Topology in Terms of Derived Sets, Cantor–Bendixson Rank
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