Theorem halfre

Description: One-half is real. (Contributed by David A. Wheeler, 8-Dec-2018)

	Ref	Expression
Assertion	halfre	⊢ ( 1 / 2 ) ∈ ℝ

Proof

Step	Hyp	Ref	Expression
1		2re	⊢ 2 ∈ ℝ
2		2ne0	⊢ 2 ≠ 0
3	1 2	rereccli	⊢ ( 1 / 2 ) ∈ ℝ