Description: Inference form of dfvd2an . (Contributed by Alan Sare, 23-Apr-2015) (Proof modification is discouraged.) (New usage is discouraged.)
| Ref | Expression | ||
|---|---|---|---|
| Hypothesis | dfvd2ani.1 | |- (. (. ph ,. ps ). ->. ch ). |
|
| Assertion | dfvd2ani | |- ( ( ph /\ ps ) -> ch ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dfvd2ani.1 | |- (. (. ph ,. ps ). ->. ch ). |
|
| 2 | dfvd2an | |- ( (. (. ph ,. ps ). ->. ch ). <-> ( ( ph /\ ps ) -> ch ) ) |
|
| 3 | 1 2 | mpbi | |- ( ( ph /\ ps ) -> ch ) |