Description: The edges of a graph represented as ordered pair. (Contributed by AV, 1-Jan-2020) (Revised by AV, 13-Oct-2020)
Ref | Expression | ||
---|---|---|---|
Assertion | edgopval | |- ( ( V e. W /\ E e. X ) -> ( Edg ` <. V , E >. ) = ran E ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | edgval | |- ( Edg ` <. V , E >. ) = ran ( iEdg ` <. V , E >. ) |
|
2 | opiedgfv | |- ( ( V e. W /\ E e. X ) -> ( iEdg ` <. V , E >. ) = E ) |
|
3 | 2 | rneqd | |- ( ( V e. W /\ E e. X ) -> ran ( iEdg ` <. V , E >. ) = ran E ) |
4 | 1 3 | syl5eq | |- ( ( V e. W /\ E e. X ) -> ( Edg ` <. V , E >. ) = ran E ) |