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Related theorems GIF version |
| Description: A deduction based on modus ponens. |
| Ref | Expression |
|---|---|
| mpan2d.1 | ⊢ (φ → χ) |
| mpan2d.2 | ⊢ (φ → ((ψ ∧ χ) → θ)) |
| Ref | Expression |
|---|---|
| mpan2d | ⊢ (φ → (ψ → θ)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mpan2d.1 | . 2 ⊢ (φ → χ) | |
| 2 | mpan2d.2 | . . 3 ⊢ (φ → ((ψ ∧ χ) → θ)) | |
| 3 | 2 | exp3a 292 | . 2 ⊢ (φ → (ψ → (χ → θ))) |
| 4 | 1, 3 | mpid 48 | 1 ⊢ (φ → (ψ → θ)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 ∧ wa 196 |
| This theorem is referenced by: alephle 3689 peano2uz 4602 flgzt 4626 shsel1t 5286 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 |
| This theorem depends on definitions: df-bi 128 df-an 198 |