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 ) |