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Definition df-1p 9660
Description: Define the positive real constant 1. This is a "temporary" set used in the construction of complex numbers df-c 9798, and is intended to be used only by the construction. Definition of [Gleason] p. 122. (Contributed by NM, 13-Mar-1996.) (New usage is discouraged.)
Assertion
Ref Expression
df-1p 1P = {𝑥𝑥 <Q 1Q}

Detailed syntax breakdown of Definition df-1p
StepHypRef Expression
1 c1p 9538 . 2 class 1P
2 vx . . . . 5 setvar 𝑥
32cv 1473 . . . 4 class 𝑥
4 c1q 9531 . . . 4 class 1Q
5 cltq 9536 . . . 4 class <Q
63, 4, 5wbr 4577 . . 3 wff 𝑥 <Q 1Q
76, 2cab 2595 . 2 class {𝑥𝑥 <Q 1Q}
81, 7wceq 1474 1 wff 1P = {𝑥𝑥 <Q 1Q}
Colors of variables: wff setvar class
This definition is referenced by:  1pr  9693  1idpr  9707  reclem3pr  9727  reclem4pr  9728
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