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Definition df-c 11112
Description: Define the set of complex numbers. The 23 axioms for complex numbers start at axresscn 11139. (Contributed by NM, 22-Feb-1996.) (New usage is discouraged.)
Assertion
Ref Expression
df-c ℂ = (R × R)

Detailed syntax breakdown of Definition df-c
StepHypRef Expression
1 cc 11104 . 2 class
2 cnr 10856 . . 3 class R
32, 2cxp 5673 . 2 class (R × R)
41, 3wceq 1541 1 wff ℂ = (R × R)
Colors of variables: wff setvar class
This definition is referenced by:  opelcn  11120  0ncn  11124  addcnsr  11126  mulcnsr  11127  dfcnqs  11133  axaddf  11136  axmulf  11137  axcnex  11138  axresscn  11139  axcnre  11155  wuncn  11161  bj-inftyexpitaudisj  36074
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