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| Mirrors > Home > ILE Home > Th. List > imdistanri | GIF version | ||
| Description: Distribution of implication with conjunction. (Contributed by NM, 8-Jan-2002.) |
| Ref | Expression |
|---|---|
| imdistanri.1 | ⊢ (𝜑 → (𝜓 → 𝜒)) |
| Ref | Expression |
|---|---|
| imdistanri | ⊢ ((𝜓 ∧ 𝜑) → (𝜒 ∧ 𝜑)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | imdistanri.1 | . . 3 ⊢ (𝜑 → (𝜓 → 𝜒)) | |
| 2 | 1 | com12 30 | . 2 ⊢ (𝜓 → (𝜑 → 𝜒)) |
| 3 | 2 | impac 381 | 1 ⊢ ((𝜓 ∧ 𝜑) → (𝜒 ∧ 𝜑)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 |
| This theorem is referenced by: (None) |
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