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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 7254 |
. 2
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2 | c1r 6761 |
. . 3
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3 | c0r 6760 |
. . 3
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4 | 2, 3 | cop 3425 |
. 2
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5 | 1, 4 | wceq 1285 |
1
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Colors of variables: wff set class |
This definition is referenced by: pitonnlem1 7285 pitonnlem2 7287 peano1nnnn 7292 peano2nnnn 7293 recidpirq 7298 ax1cn 7301 ax1re 7302 axi2m1 7313 ax0lt1 7314 ax1rid 7315 axprecex 7318 nntopi 7332 |
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