This is an inofficial mirror of http://metamath.tirix.org for personal testing of a visualizer extension only.

Metamath Proof Explorer

Theorem nnxr

Description: A natural number is an extended real. (Contributed by Glauco Siliprandi, 24-Jan-2025)

		Ref	Expression
	Assertion	nnxr	$⊢ N \in ℕ \to N \in ℝ^{*}$

Step	Hyp	Ref	Expression
1		id	$⊢ N \in ℕ \to N \in ℕ$
2	1	nnxrd	$⊢ N \in ℕ \to N \in ℝ^{*}$