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Definition df-c 7049
Description: Define the set of complex numbers. (Contributed by NM, 22-Feb-1996.)
Assertion
Ref Expression
df-c ℂ = (R × R)

Detailed syntax breakdown of Definition df-c
StepHypRef Expression
1 cc 7041 . 2 class
2 cnr 6549 . . 3 class R
32, 2cxp 4369 . 2 class (R × R)
41, 3wceq 1285 1 wff ℂ = (R × R)
Colors of variables: wff set class
This definition is referenced by:  opelcn  7057  0ncn  7062  addcnsr  7064  mulcnsr  7065  dfcnqs  7071  addvalex  7074  axcnex  7089  axresscn  7090  axaddcl  7094  axmulcl  7096  axaddcom  7098  ax0id  7106  axcnre  7109
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