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Mirrors > Home > ILE Home > Th. List > anim12i | GIF version |
Description: Conjoin antecedents and consequents of two premises. (Contributed by NM, 5-Aug-1993.) (Proof shortened by Wolf Lammen, 14-Dec-2013.) |
Ref | Expression |
---|---|
anim12i.1 | ⊢ (𝜑 → 𝜓) |
anim12i.2 | ⊢ (𝜒 → 𝜃) |
Ref | Expression |
---|---|
anim12i | ⊢ ((𝜑 ∧ 𝜒) → (𝜓 ∧ 𝜃)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | anim12i.1 | . 2 ⊢ (𝜑 → 𝜓) | |
2 | anim12i.2 | . 2 ⊢ (𝜒 → 𝜃) | |
3 | id 19 | . 2 ⊢ ((𝜓 ∧ 𝜃) → (𝜓 ∧ 𝜃)) | |
4 | 1, 2, 3 | syl2an 287 | 1 ⊢ ((𝜑 ∧ 𝜒) → (𝜓 ∧ 𝜃)) |
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