Topological Closure of Singleton is Irreducible/Proof 1
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Theorem
Let $T = \struct {S, \tau}$ be a topological space.
Let $x$ be a point of $T$.
Then:
- $\set x^-$ is irreducible
where $\set x^-$ denotes the topological closure of $\set x$.
Proof
Follows from:
$\blacksquare$