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Definition df-1p 9143
Description: Define the positive real constant 1. This is a "temporary" set used in the construction of complex numbers df-c 9280, 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  =  { x  |  x  <Q  1Q }

Detailed syntax breakdown of Definition df-1p
StepHypRef Expression
1 c1p 9019 . 2  class  1P
2 vx . . . . 5  setvar  x
32cv 1368 . . . 4  class  x
4 c1q 9012 . . . 4  class  1Q
5 cltq 9017 . . . 4  class  <Q
63, 4, 5wbr 4287 . . 3  wff  x  <Q  1Q
76, 2cab 2424 . 2  class  { x  |  x  <Q  1Q }
81, 7wceq 1369 1  wff  1P  =  { x  |  x  <Q  1Q }
Colors of variables: wff setvar class
This definition is referenced by:  1pr  9176  1idpr  9190  reclem3pr  9210  reclem4pr  9211
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