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Metamath Proof Explorer

Theorem iitop

Description: The unit interval is a topological space. (Contributed by Jeff Madsen, 2-Sep-2009)

		Ref	Expression
	Assertion	iitop	$⊢ II \in Top$

Step	Hyp	Ref	Expression
1		iitopon	$⊢ II \in TopOn ([0, 1])$
2	1	topontopi	$⊢ II \in Top$