Definition df-1 6989

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 6982	. 2 class 1
2		c1r 6489	. . 3 class 1R
3		c0r 6488	. . 3 class 0R
4	2, 3	cop 3401	. 2 class ⟨1R, 0R⟩
5	1, 4	wceq 1284	1 wff 1 = ⟨1R, 0R⟩

This definition is referenced by:  pitonnlem1  7013  pitonnlem2  7015  peano1nnnn  7020  peano2nnnn  7021  recidpirq  7026  ax1cn  7029  ax1re  7030  axi2m1  7041  ax0lt1  7042  ax1rid  7043  axprecex  7046  nntopi  7060