Definition df-1r 6690

Description: Define signed real constant 1. This is a "temporary" set used in the construction of complex numbers df-c 6758, and is intended to be used only by the construction. From Proposition 9-4.2 of [Gleason] p. 126.

Assertion

Ref	Expression
df-1r	|- 1R = [<.(1P +P. 1P), 1P>.] ~R

Detailed syntax breakdown of Definition df-1r

Step	Hyp	Ref	Expression
1		c1r 6513	. 2 class 1R
2		c1p 6504	. . . . 5 class 1P
3		cpp 6505	. . . . 5 class +P.
4	2, 2, 3	co 4981	. . . 4 class (1P +P. 1P)
5	4, 2	cop 3240	. . 3 class <.(1P +P. 1P), 1P>.
6		cer 6510	. . 3 class ~R
7	5, 6	cec 5477	. 2 class [<.(1P +P. 1P), 1P>.] ~R
8	1, 7	wceq 1586	1 wff 1R = [<.(1P +P. 1P), 1P>.] ~R

This definition is referenced by:  1sr 6708  m1p1sr 6719  m1m1sr 6720  0lt1sr 6722  1idsr 6725  recexsrlem 6730

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