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| Mirrors > Home > ILE Home > Th. List > mpan9 | GIF version | ||
| Description: Modus ponens conjoining dissimilar antecedents. (Contributed by NM, 1-Feb-2008.) (Proof shortened by Andrew Salmon, 7-May-2011.) | 
| Ref | Expression | 
|---|---|
| mpan9.1 | ⊢ (𝜑 → 𝜓) | 
| mpan9.2 | ⊢ (𝜒 → (𝜓 → 𝜃)) | 
| Ref | Expression | 
|---|---|
| mpan9 | ⊢ ((𝜑 ∧ 𝜒) → 𝜃) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | mpan9.1 | . . 3 ⊢ (𝜑 → 𝜓) | |
| 2 | mpan9.2 | . . 3 ⊢ (𝜒 → (𝜓 → 𝜃)) | |
| 3 | 1, 2 | syl5 32 | . 2 ⊢ (𝜒 → (𝜑 → 𝜃)) | 
| 4 | 3 | impcom 125 | 1 ⊢ ((𝜑 ∧ 𝜒) → 𝜃) | 
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