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Mirrors > Home > ILE Home > Th. List > recnd | GIF version |
Description: Deduction from real number to complex number. (Contributed by NM, 26-Oct-1999.) |
Ref | Expression |
---|---|
recnd.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
Ref | Expression |
---|---|
recnd | ⊢ (𝜑 → 𝐴 ∈ ℂ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | recnd.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
2 | recn 7907 | . 2 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℂ) | |
3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → 𝐴 ∈ ℂ) |
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