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Related theorems GIF version |
| Description: Simplification of a conjunction. |
| Ref | Expression |
|---|---|
| simprl | ⊢ ((φ ⋀ (ψ ⋀ χ)) → ψ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | id 59 | . 2 ⊢ (ψ → ψ) | |
| 2 | 1 | ad2antrl 406 | 1 ⊢ ((φ ⋀ (ψ ⋀ χ)) → ψ) |