Definition df-m1r 11056

Description: Define signed real constant -1. This is a "temporary" set used in the construction of complex numbers df-c 11115, 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 10862	. 2 class -1R
2		c1p 10854	. . . 4 class 1P
3		cpp 10855	. . . . 5 class +P
4	2, 2, 3	co 7408	. . . 4 class (1P +P 1P)
5	2, 4	cop 4634	. . 3 class ⟨1P, (1P +P 1P)⟩
6		cer 10858	. . 3 class ~R
7	5, 6	cec 8700	. 2 class [⟨1P, (1P +P 1P)⟩] ~R
8	1, 7	wceq 1541	1 wff -1R = [⟨1P, (1P +P 1P)⟩] ~R

This definition is referenced by:  m1r  11076  m1p1sr  11086  m1m1sr  11087  mappsrpr  11102  map2psrpr  11104