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Mirrors > Home > ILE Home > Th. List > simplr | GIF version |
Description: Simplification of a conjunction. (Contributed by NM, 20-Mar-2007.) |
Ref | Expression |
---|---|
simplr | ⊢ (((φ ∧ ψ) ∧ χ) → ψ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | id 19 | . 2 ⊢ (ψ → ψ) | |
2 | 1 | ad2antlr 458 | 1 ⊢ (((φ ∧ ψ) ∧ χ) → ψ) |
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