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| Mirrors > Home > ILE Home > Th. List > imp | GIF version | ||
| Description: Importation inference. (Contributed by NM, 5-Aug-1993.) (Proof shortened by Eric Schmidt, 22-Dec-2006.) | 
| Ref | Expression | 
|---|---|
| imp.1 | ⊢ (𝜑 → (𝜓 → 𝜒)) | 
| Ref | Expression | 
|---|---|
| imp | ⊢ ((𝜑 ∧ 𝜓) → 𝜒) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | simpl 109 | . 2 ⊢ ((𝜑 ∧ 𝜓) → 𝜑) | |
| 2 | simpr 110 | . 2 ⊢ ((𝜑 ∧ 𝜓) → 𝜓) | |
| 3 | imp.1 | . 2 ⊢ (𝜑 → (𝜓 → 𝜒)) | |
| 4 | 1, 2, 3 | sylc 62 | 1 ⊢ ((𝜑 ∧ 𝜓) → 𝜒) | 
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