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Definition df-i 9522
Description: Define the complex number (the imaginary unit). (Contributed by NM, 22-Feb-1996.) (New usage is discouraged.)
Assertion
Ref Expression
df-i

Detailed syntax breakdown of Definition df-i
StepHypRef Expression
1 ci 9515 . 2
2 c0r 9265 . . 3
3 c1r 9266 . . 3
42, 3cop 4035 . 2
51, 4wceq 1395 1
Colors of variables: wff setvar class
This definition is referenced by:  axicn  9548  axi2m1  9557  axcnre  9562  avril1  25171
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