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Definition df-m1r 6972
Description: Define signed real constant -1. This is a "temporary" set used in the construction of complex numbers, and is intended to be used only by the construction. (Contributed by NM, 9-Aug-1995.)
Assertion
Ref Expression
df-m1r -1R = [⟨1P, (1P +P 1P)⟩] ~R

Detailed syntax breakdown of Definition df-m1r
StepHypRef Expression
1 cm1r 6552 . 2 class -1R
2 c1p 6544 . . . 4 class 1P
3 cpp 6545 . . . . 5 class +P
42, 2, 3co 5543 . . . 4 class (1P +P 1P)
52, 4cop 3409 . . 3 class ⟨1P, (1P +P 1P)⟩
6 cer 6548 . . 3 class ~R
75, 6cec 6170 . 2 class [⟨1P, (1P +P 1P)⟩] ~R
81, 7wceq 1285 1 wff -1R = [⟨1P, (1P +P 1P)⟩] ~R
Colors of variables: wff set class
This definition is referenced by:  m1r  6991  m1p1sr  6999  m1m1sr  7000
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