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| Mirrors > Home > MPE Home > Th. List > mpand | Structured version Visualization version GIF version | ||
| Description: A deduction based on modus ponens. (Contributed by NM, 12-Dec-2004.) (Proof shortened by Wolf Lammen, 7-Apr-2013.) |
| Ref | Expression |
|---|---|
| mpand.1 | ⊢ (𝜑 → 𝜓) |
| mpand.2 | ⊢ (𝜑 → ((𝜓 ∧ 𝜒) → 𝜃)) |
| Ref | Expression |
|---|---|
| mpand | ⊢ (𝜑 → (𝜒 → 𝜃)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mpand.1 | . 2 ⊢ (𝜑 → 𝜓) | |
| 2 | mpand.2 | . . 3 ⊢ (𝜑 → ((𝜓 ∧ 𝜒) → 𝜃)) | |
| 3 | 2 | ancomsd 470 | . 2 ⊢ (𝜑 → ((𝜒 ∧ 𝜓) → 𝜃)) |
| 4 | 1, 3 | mpan2d 710 | 1 ⊢ (𝜑 → (𝜒 → 𝜃)) |
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