Definition df-m1r 3967

Description: Define signed real constant -1. This is a "temporary" set used in the construction of complex numbers df-c 4034, and is intended to be used only by the construction.

Assertion

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

Detailed syntax breakdown of Definition df-m1r

Step	Hyp	Ref	Expression
1		cm1r 3790	. 2 class -1R
2		c1p 3780	. . . 4 class 1P
3		cpp 3781	. . . . 5 class +P
4	2, 2, 3	co 3001	. . . 4 class (1P +P 1P)
5	2, 4	cop 1810	. . 3 class ⟨1P, (1P +P 1P)⟩
6		cer 3786	. . 3 class ~R
7	5, 6	cec 3198	. 2 class [⟨1P, (1P +P 1P)⟩] ~R
8	1, 7	wceq 1091	1 wff -1R = [⟨1P, (1P +P 1P)⟩] ~R

This definition is referenced by:  m1r 3985  m1p1sr 3995  m1m1sr 3996

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