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Metamath Proof Explorer

Theorem rehalfcld

Description: Real closure of half. (Contributed by Mario Carneiro, 27-May-2016)

		Ref	Expression
	Hypothesis	rehalfcld.1	$⊢ φ \to A \in ℝ$
	Assertion	rehalfcld	$⊢ φ \to \frac{A}{2} \in ℝ$

Step	Hyp	Ref	Expression
1		rehalfcld.1	$⊢ φ \to A \in ℝ$
2		rehalfcl	$⊢ A \in ℝ \to \frac{A}{2} \in ℝ$
3	1 2	syl	$⊢ φ \to \frac{A}{2} \in ℝ$