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Related theorems GIF version |
| Description: Deduction rearranging conjuncts. |
| Ref | Expression |
|---|---|
| an1rs.1 | ⊢ (((φ ⋀ ψ) ⋀ χ) → θ) |
| Ref | Expression |
|---|---|
| an1rs | ⊢ (((φ ⋀ χ) ⋀ ψ) → θ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | an23 488 | . 2 ⊢ (((φ ⋀ χ) ⋀ ψ) ↔ ((φ ⋀ ψ) ⋀ χ)) | |
| 2 | an1rs.1 | . 2 ⊢ (((φ ⋀ ψ) ⋀ χ) → θ) | |
| 3 | 1, 2 | sylbi 199 | 1 ⊢ (((φ ⋀ χ) ⋀ ψ) → θ) |