Definition df-1 7761

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 7754	. 2 class 1
2		c1r 7240	. . 3 class 1R
3		c0r 7239	. . 3 class 0R
4	2, 3	cop 3579	. 2 class ⟨1R, 0R⟩
5	1, 4	wceq 1343	1 wff 1 = ⟨1R, 0R⟩

This definition is referenced by:  pitonnlem1  7786  pitonnlem2  7788  peano1nnnn  7793  peano2nnnn  7794  recidpirq  7799  ax1cn  7802  ax1re  7803  axi2m1  7816  ax0lt1  7817  ax1rid  7818  axprecex  7821  nntopi  7835