Definition df-c 8179

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

Step	Hyp	Ref	Expression
1		cc 8171	. 2 class ℂ
2		cnr 7658	. . 3 class R
3	2, 2	cxp 4770	. 2 class (R × R)
4	1, 3	wceq 1402	1 wff ℂ = (R × R)

This definition is referenced by:  opelcn  8187  0ncn  8192  cnm  8193  addcnsr  8195  mulcnsr  8196  dfcnqs  8202  addvalex  8205  axcnex  8220  axresscn  8221  axaddcl  8225  axmulcl  8227  axaddcom  8231  ax0id  8239  axcnre  8242