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| Mirrors > Home > NFE Home > Th. List > adantr | GIF version | ||
| Description: Inference adding a conjunct to the right of an antecedent. (Contributed by NM, 30-Aug-1993.) |
| Ref | Expression |
|---|---|
| adantr.1 | ⊢ (φ → ψ) |
| Ref | Expression |
|---|---|
| adantr | ⊢ ((φ ∧ χ) → ψ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | adantr.1 | . . 3 ⊢ (φ → ψ) | |
| 2 | 1 | a1d 22 | . 2 ⊢ (φ → (χ → ψ)) |
| 3 | 2 | imp 418 | 1 ⊢ ((φ ∧ χ) → ψ) |
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