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Metamath Proof Explorer

Theorem renemnfd

Description: No real equals minus infinity. (Contributed by Mario Carneiro, 28-May-2016)

		Ref	Expression
	Hypothesis	rexrd.1	$⊢ φ \to A \in ℝ$
	Assertion	renemnfd	$⊢ φ \to A \neq −∞$

Step	Hyp	Ref	Expression
1		rexrd.1	$⊢ φ \to A \in ℝ$
2		renemnf	$⊢ A \in ℝ \to A \neq −∞$
3	1 2	syl	$⊢ φ \to A \neq −∞$