Theorem re1

Description: The real part of one. (Contributed by Scott Fenton, 9-Jun-2006)

	Ref	Expression
Assertion	re1	|- ( Re ` 1 ) = 1

Proof

Step	Hyp	Ref	Expression
1		1re	|- 1 e. RR
2		rere	|- ( 1 e. RR -> ( Re ` 1 ) = 1 )
3	1 2	ax-mp	|- ( Re ` 1 ) = 1