Definition df-m1r 10911

Description: Define signed real constant -1. This is a "temporary" set used in the construction of complex numbers df-c 10970, and is intended to be used only by the construction. (Contributed by NM, 9-Aug-1995.) (New usage is discouraged.)

Assertion

Ref	Expression
df-m1r	⊢ -1R = [⟨1P, (1P +P 1P)⟩] ~R

Detailed syntax breakdown of Definition df-m1r

Step	Hyp	Ref	Expression
1		cm1r 10717	. 2 class -1R
2		c1p 10709	. . . 4 class 1P
3		cpp 10710	. . . . 5 class +P
4	2, 2, 3	co 7329	. . . 4 class (1P +P 1P)
5	2, 4	cop 4578	. . 3 class ⟨1P, (1P +P 1P)⟩
6		cer 10713	. . 3 class ~R
7	5, 6	cec 8559	. 2 class [⟨1P, (1P +P 1P)⟩] ~R
8	1, 7	wceq 1540	1 wff -1R = [⟨1P, (1P +P 1P)⟩] ~R

This definition is referenced by:  m1r  10931  m1p1sr  10941  m1m1sr  10942  mappsrpr  10957  map2psrpr  10959