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| Mirrors > Home > ILE Home > Th. List > ad2antrr | GIF version | ||
| Description: Deduction adding two conjuncts to antecedent. (Contributed by NM, 19-Oct-1999.) (Proof shortened by Wolf Lammen, 20-Nov-2012.) | 
| Ref | Expression | 
|---|---|
| ad2ant.1 | ⊢ (𝜑 → 𝜓) | 
| Ref | Expression | 
|---|---|
| ad2antrr | ⊢ (((𝜑 ∧ 𝜒) ∧ 𝜃) → 𝜓) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | ad2ant.1 | . . 3 ⊢ (𝜑 → 𝜓) | |
| 2 | 1 | adantr 276 | . 2 ⊢ ((𝜑 ∧ 𝜃) → 𝜓) | 
| 3 | 2 | adantlr 477 | 1 ⊢ (((𝜑 ∧ 𝜒) ∧ 𝜃) → 𝜓) | 
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