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Mirrors > Home > MPE Home > Th. List > ax-1cn | Structured version Visualization version GIF version |
Description: 1 is a complex number. Axiom 2 of 22 for real and complex numbers, justified by Theorem ax1cn 10889. (Contributed by NM, 1-Mar-1995.) |
Ref | Expression |
---|---|
ax-1cn | ⊢ 1 ∈ ℂ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | c1 10856 | . 2 class 1 | |
2 | cc 10853 | . 2 class ℂ | |
3 | 1, 2 | wcel 2109 | 1 wff 1 ∈ ℂ |
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