Description: The element of the relations class is a relation. (Contributed by Peter Mazsa, 20-Jul-2019)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | elrelsrelim | |- ( R e. Rels -> Rel R ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elrelsrel | |- ( R e. Rels -> ( R e. Rels <-> Rel R ) ) |
|
| 2 | 1 | ibi | |- ( R e. Rels -> Rel R ) |