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Related theorems GIF version |
| Description: An inference based on modus ponens. |
| Ref | Expression |
|---|---|
| mp3an1.1 | ⊢ φ |
| mp3an1.2 | ⊢ ((φ ⋀ ψ ⋀ χ) → θ) |
| Ref | Expression |
|---|---|
| mp3an1 | ⊢ ((ψ ⋀ χ) → θ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mp3an1.1 | . 2 ⊢ φ | |
| 2 | mp3an1.2 | . . 3 ⊢ ((φ ⋀ ψ ⋀ χ) → θ) | |
| 3 | 2 | 3expb 833 | . 2 ⊢ ((φ ⋀ (ψ ⋀ χ)) → θ) |
| 4 | 1, 3 | mpan 694 | 1 ⊢ ((ψ ⋀ χ) → θ) |