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Definition df-c 6697
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 6689 . 2 class
2 cnr 6281 . . 3 class R
32, 2cxp 4286 . 2 class (R × R)
41, 3wceq 1242 1 wff ℂ = (R × R)
Colors of variables: wff set class
This definition is referenced by:  opelcn  6705  0ncn  6709  addcnsr  6711  mulcnsr  6712  dfcnqs  6718  axcnex  6725  axresscn  6726  axaddcl  6730  axmulcl  6732  axaddcom  6734  ax0id  6742  axcnre  6745
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