Description: Property of _FrSe . (Contributed by Jonathan Ben-Naim, 3-Jun-2011) (New usage is discouraged.)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | bnj1364 | |- ( R _FrSe A -> R _Se A ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-bnj15 | |- ( R _FrSe A <-> ( R Fr A /\ R _Se A ) ) |
|
| 2 | 1 | simprbi | |- ( R _FrSe A -> R _Se A ) |