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Mirrors > Home > ILE Home > Th. List > df-1 | Unicode version |
Description: Define the complex number 1. (Contributed by NM, 22-Feb-1996.) |
Ref | Expression |
---|---|
df-1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | c1 7733 | . 2 | |
2 | c1r 7219 | . . 3 | |
3 | c0r 7218 | . . 3 | |
4 | 2, 3 | cop 3563 | . 2 |
5 | 1, 4 | wceq 1335 | 1 |
Colors of variables: wff set class |
This definition is referenced by: pitonnlem1 7765 pitonnlem2 7767 peano1nnnn 7772 peano2nnnn 7773 recidpirq 7778 ax1cn 7781 ax1re 7782 axi2m1 7795 ax0lt1 7796 ax1rid 7797 axprecex 7800 nntopi 7814 |
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