Definition df-1 7356

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 7349	. 2 class 1
2		c1r 6856	. . 3 class 1R
3		c0r 6855	. . 3 class 0R
4	2, 3	cop 3449	. 2 class <. 1R , 0R >.
5	1, 4	wceq 1289	1 wff 1 = <. 1R , 0R >.

This definition is referenced by:  pitonnlem1  7380  pitonnlem2  7382  peano1nnnn  7387  peano2nnnn  7388  recidpirq  7393  ax1cn  7396  ax1re  7397  axi2m1  7408  ax0lt1  7409  ax1rid  7410  axprecex  7413  nntopi  7427