Definition df-1 8083

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 8076	. 2 class 1
2		c1r 7562	. . 3 class 1R
3		c0r 7561	. . 3 class 0R
4	2, 3	cop 3676	. 2 class ⟨1R, 0R⟩
5	1, 4	wceq 1398	1 wff 1 = ⟨1R, 0R⟩

This definition is referenced by:  pitonnlem1  8108  pitonnlem2  8110  peano1nnnn  8115  peano2nnnn  8116  recidpirq  8121  ax1cn  8124  ax1re  8125  axi2m1  8138  ax0lt1  8139  ax1rid  8140  axprecex  8143  nntopi  8157