Description: Conjunction implies disjunction with one common formula (3/4). (Contributed by BJ, 4-Oct-2019)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | animorlr | ⊢ ( ( 𝜑 ∧ 𝜓 ) → ( 𝜒 ∨ 𝜑 ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simpl | ⊢ ( ( 𝜑 ∧ 𝜓 ) → 𝜑 ) | |
| 2 | 1 | olcd | ⊢ ( ( 𝜑 ∧ 𝜓 ) → ( 𝜒 ∨ 𝜑 ) ) |