Description: Elements in the monoid of endofunctions on A are functions from A into itself. (Contributed by AV, 27-Jan-2024)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | efmndbas.g | |- G = ( EndoFMnd ` A ) |
|
| efmndbas.b | |- B = ( Base ` G ) |
||
| Assertion | efmndbasf | |- ( F e. B -> F : A --> A ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | efmndbas.g | |- G = ( EndoFMnd ` A ) |
|
| 2 | efmndbas.b | |- B = ( Base ` G ) |
|
| 3 | 1 2 | elefmndbas2 | |- ( F e. B -> ( F e. B <-> F : A --> A ) ) |
| 4 | 3 | ibi | |- ( F e. B -> F : A --> A ) |