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| Mirrors > Home > ILE Home > Th. List > 1cnd | GIF version | ||
| Description: 1 is a complex number, deductive form (common case). (Contributed by David A. Wheeler, 6-Dec-2018.) | 
| Ref | Expression | 
|---|---|
| 1cnd | ⊢ (𝜑 → 1 ∈ ℂ) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | ax-1cn 7972 | . 2 ⊢ 1 ∈ ℂ | |
| 2 | 1 | a1i 9 | 1 ⊢ (𝜑 → 1 ∈ ℂ) | 
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