Description: For when pm3.4 lacks a pm3.4i. (Contributed by Jarvin Udandy, 9-Sep-2020)
Ref | Expression | ||
---|---|---|---|
Hypothesis | jabtaib.1 | |- ( ph /\ ps ) |
|
Assertion | jabtaib | |- ( ph -> ps ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | jabtaib.1 | |- ( ph /\ ps ) |
|
2 | pm3.4 | |- ( ( ph /\ ps ) -> ( ph -> ps ) ) |
|
3 | 1 2 | ax-mp | |- ( ph -> ps ) |