Description: Ordered pair with function value. Part of Theorem 4.3(i) of Monk1 p. 41. (Contributed by NM, 14-Oct-1996)
Ref | Expression | ||
---|---|---|---|
Assertion | funfvop | |- ( ( Fun F /\ A e. dom F ) -> <. A , ( F ` A ) >. e. F ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid | |- ( F ` A ) = ( F ` A ) |
|
2 | funopfvb | |- ( ( Fun F /\ A e. dom F ) -> ( ( F ` A ) = ( F ` A ) <-> <. A , ( F ` A ) >. e. F ) ) |
|
3 | 1 2 | mpbii | |- ( ( Fun F /\ A e. dom F ) -> <. A , ( F ` A ) >. e. F ) |