Description: Disjoin antecedents and consequents in a deduction. (Contributed by NM, 23-Apr-1995)
Ref | Expression | ||
---|---|---|---|
Hypothesis | orim1d.1 | |- ( ph -> ( ps -> ch ) ) |
|
Assertion | orim2d | |- ( ph -> ( ( th \/ ps ) -> ( th \/ ch ) ) ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | orim1d.1 | |- ( ph -> ( ps -> ch ) ) |
|
2 | idd | |- ( ph -> ( th -> th ) ) |
|
3 | 2 1 | orim12d | |- ( ph -> ( ( th \/ ps ) -> ( th \/ ch ) ) ) |