Description: Conjunction implies disjunction with one common formula (2/4). (Contributed by BJ, 4-Oct-2019)
Ref | Expression | ||
---|---|---|---|
Assertion | animorr | |- ( ( ph /\ ps ) -> ( ch \/ ps ) ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simpr | |- ( ( ph /\ ps ) -> ps ) |
|
2 | 1 | olcd | |- ( ( ph /\ ps ) -> ( ch \/ ps ) ) |