Definition df-1 8177

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 8170	. 2 class 1
2		c1r 7656	. . 3 class 1R
3		c0r 7655	. . 3 class 0R
4	2, 3	cop 3708	. 2 class ⟨1R, 0R⟩
5	1, 4	wceq 1402	1 wff 1 = ⟨1R, 0R⟩

This definition is referenced by:  pitonnlem1  8202  pitonnlem2  8204  peano1nnnn  8209  peano2nnnn  8210  recidpirq  8215  ax1cn  8218  ax1re  8219  axi2m1  8232  ax0lt1  8233  ax1rid  8234  axprecex  8237  nntopi  8251