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Mirrors > Home > ILE Home > Th. List > df-1 | GIF version |
Description: Define the complex number 1. (Contributed by NM, 22-Feb-1996.) |
Ref | Expression |
---|---|
df-1 | ⊢ 1 = 〈1R, 0R〉 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | c1 7589 | . 2 class 1 | |
2 | c1r 7075 | . . 3 class 1R | |
3 | c0r 7074 | . . 3 class 0R | |
4 | 2, 3 | cop 3500 | . 2 class 〈1R, 0R〉 |
5 | 1, 4 | wceq 1316 | 1 wff 1 = 〈1R, 0R〉 |
Colors of variables: wff set class |
This definition is referenced by: pitonnlem1 7621 pitonnlem2 7623 peano1nnnn 7628 peano2nnnn 7629 recidpirq 7634 ax1cn 7637 ax1re 7638 axi2m1 7651 ax0lt1 7652 ax1rid 7653 axprecex 7656 nntopi 7670 |
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