Definition df-i 10545

Description: Define the complex number i (the imaginary unit). (Contributed by NM, 22-Feb-1996.) (New usage is discouraged.)

Assertion

Ref	Expression
df-i	⊢ i = ⟨0R, 1R⟩

Detailed syntax breakdown of Definition df-i

Step	Hyp	Ref	Expression
1		ci 10538	. 2 class i
2		c0r 10287	. . 3 class 0R
3		c1r 10288	. . 3 class 1R
4	2, 3	cop 4572	. 2 class ⟨0R, 1R⟩
5	1, 4	wceq 1533	1 wff i = ⟨0R, 1R⟩

This definition is referenced by:  axicn  10571  axi2m1  10580  axcnre  10585  avril1  28241