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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 7775 | . 2 | |
2 | c1r 7261 | . . 3 | |
3 | c0r 7260 | . . 3 | |
4 | 2, 3 | cop 3586 | . 2 |
5 | 1, 4 | wceq 1348 | 1 |
Colors of variables: wff set class |
This definition is referenced by: pitonnlem1 7807 pitonnlem2 7809 peano1nnnn 7814 peano2nnnn 7815 recidpirq 7820 ax1cn 7823 ax1re 7824 axi2m1 7837 ax0lt1 7838 ax1rid 7839 axprecex 7842 nntopi 7856 |
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