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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 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | c1 7349 |
. 2
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2 | c1r 6856 |
. . 3
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3 | c0r 6855 |
. . 3
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4 | 2, 3 | cop 3449 |
. 2
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5 | 1, 4 | wceq 1289 |
1
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Colors of variables: wff set class |
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 |
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