Definition df-1 7880

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 7873	. 2 class 1
2		c1r 7359	. . 3 class 1R
3		c0r 7358	. . 3 class 0R
4	2, 3	cop 3621	. 2 class ⟨1R, 0R⟩
5	1, 4	wceq 1364	1 wff 1 = ⟨1R, 0R⟩

This definition is referenced by:  pitonnlem1  7905  pitonnlem2  7907  peano1nnnn  7912  peano2nnnn  7913  recidpirq  7918  ax1cn  7921  ax1re  7922  axi2m1  7935  ax0lt1  7936  ax1rid  7937  axprecex  7940  nntopi  7954