Definition df-c 11178

Description: Define the set of complex numbers. The 23 axioms for complex numbers start at axresscn 11205. (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

Step	Hyp	Ref	Expression
1		cc 11170	. 2 class ℂ
2		cnr 10922	. . 3 class R
3	2, 2	cxp 5645	. 2 class (R × R)
4	1, 3	wceq 1570	1 wff ℂ = (R × R)

This definition is used by:  opelcn  11186  0ncn  11190  addcnsr  11192  mulcnsr  11193  dfcnqs  11199  axaddf  11202  axmulf  11203  axcnex  11204  axresscn  11205  axcnre  11221  wuncn  11227  bj-inftyexpitaudisj  38046