Description: /\ -manipulation. (Contributed by Jonathan Ben-Naim, 3-Jun-2011) (New usage is discouraged.)
| Ref | Expression | ||
|---|---|---|---|
| Hypothesis | bnj705.1 | |- ( ph -> ta ) |
|
| Assertion | bnj705 | |- ( ( ph /\ ps /\ ch /\ th ) -> ta ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | bnj705.1 | |- ( ph -> ta ) |
|
| 2 | bnj642 | |- ( ( ph /\ ps /\ ch /\ th ) -> ph ) |
|
| 3 | 2 1 | syl | |- ( ( ph /\ ps /\ ch /\ th ) -> ta ) |