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Related theorems GIF version |
| Description: Deduction adding a conjunct to an antecedent. |
| Ref | Expression |
|---|---|
| adant2.1 | ⊢ ((φ ∧ ψ) → χ) |
| Ref | Expression |
|---|---|
| adantlr | ⊢ (((φ ∧ θ) ∧ ψ) → χ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | adant2.1 | . . . 4 ⊢ ((φ ∧ ψ) → χ) | |
| 2 | 1 | exp 291 | . . 3 ⊢ (φ → (ψ → χ)) |
| 3 | 2 | adantr 306 | . 2 ⊢ ((φ ∧ θ) → (ψ → χ)) |
| 4 | 3 | imp 277 | 1 ⊢ (((φ ∧ θ) ∧ ψ) → χ) |