Definition df-1 8188

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 8181	. 2 class 1
2		c1r 7667	. . 3 class 1R
3		c0r 7666	. . 3 class 0R
4	2, 3	cop 3712	. 2 class ⟨1R, 0R⟩
5	1, 4	wceq 1402	1 wff 1 = ⟨1R, 0R⟩

This definition is used by:  pitonnlem1  8213  pitonnlem2  8215  peano1nnnn  8220  peano2nnnn  8221  recidpirq  8226  ax1cn  8229  ax1re  8230  axi2m1  8243  ax0lt1  8244  ax1rid  8245  axprecex  8248  nntopi  8262