Definition df-1 10879

Description: Define the complex number 1. (Contributed by NM, 22-Feb-1996.) (New usage is discouraged.)

Assertion

Ref	Expression
df-1	⊢ 1 = ⟨1R, 0R⟩

Detailed syntax breakdown of Definition df-1

Step	Hyp	Ref	Expression
1		c1 10872	. 2 class 1
2		c1r 10623	. . 3 class 1R
3		c0r 10622	. . 3 class 0R
4	2, 3	cop 4567	. 2 class ⟨1R, 0R⟩
5	1, 4	wceq 1539	1 wff 1 = ⟨1R, 0R⟩

This definition is referenced by:  ax1cn  10905  axi2m1  10915  ax1ne0  10916  ax1rid  10917  axrrecex  10919