Definition df-1 8030

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

Assertion

Ref	Expression
df-1	⊢ 1 = ⟨1R, 0R⟩

Detailed syntax breakdown of Definition df-1

Step	Hyp	Ref	Expression
1		c1 8023	. 2 class 1
2		c1r 7509	. . 3 class 1R
3		c0r 7508	. . 3 class 0R
4	2, 3	cop 3670	. 2 class ⟨1R, 0R⟩
5	1, 4	wceq 1395	1 wff 1 = ⟨1R, 0R⟩

This definition is referenced by:  pitonnlem1  8055  pitonnlem2  8057  peano1nnnn  8062  peano2nnnn  8063  recidpirq  8068  ax1cn  8071  ax1re  8072  axi2m1  8085  ax0lt1  8086  ax1rid  8087  axprecex  8090  nntopi  8104