Definition df-1 7782

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 7775	. 2 class 1
2		c1r 7261	. . 3 class 1R
3		c0r 7260	. . 3 class 0R
4	2, 3	cop 3586	. 2 class ⟨1R, 0R⟩
5	1, 4	wceq 1348	1 wff 1 = ⟨1R, 0R⟩

This definition is referenced by:  pitonnlem1  7807  pitonnlem2  7809  peano1nnnn  7814  peano2nnnn  7815  recidpirq  7820  ax1cn  7823  ax1re  7824  axi2m1  7837  ax0lt1  7838  ax1rid  7839  axprecex  7842  nntopi  7856