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Definition df-c 10221
Description: Define the set of complex numbers. The 23 axioms for complex numbers start at axresscn 10248. (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 10213 . 2 class
2 cnr 9966 . . 3 class R
32, 2cxp 5303 . 2 class (R × R)
41, 3wceq 1637 1 wff ℂ = (R × R)
Colors of variables: wff setvar class
This definition is referenced by:  opelcn  10229  0ncn  10233  addcnsr  10235  mulcnsr  10236  dfcnqs  10242  axaddf  10245  axmulf  10246  axcnex  10247  axresscn  10248  axcnre  10264  wuncn  10270
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