Definition df-1 8018

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 8011	. 2 class 1
2		c1r 7497	. . 3 class 1R
3		c0r 7496	. . 3 class 0R
4	2, 3	cop 3669	. 2 class ⟨1R, 0R⟩
5	1, 4	wceq 1395	1 wff 1 = ⟨1R, 0R⟩

This definition is referenced by:  pitonnlem1  8043  pitonnlem2  8045  peano1nnnn  8050  peano2nnnn  8051  recidpirq  8056  ax1cn  8059  ax1re  8060  axi2m1  8073  ax0lt1  8074  ax1rid  8075  axprecex  8078  nntopi  8092