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Mirrors > Home > ILE Home > Th. List > ax-1cn | GIF version |
Description: 1 is a complex number. Axiom for real and complex numbers, justified by Theorem ax1cn 7802. (Contributed by NM, 1-Mar-1995.) |
Ref | Expression |
---|---|
ax-1cn | ⊢ 1 ∈ ℂ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | c1 7754 | . 2 class 1 | |
2 | cc 7751 | . 2 class ℂ | |
3 | 1, 2 | wcel 2136 | 1 wff 1 ∈ ℂ |
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