_:vb6838523 . . "17" . _:vb6838523 "(mathematics, of a statement) Said of as extreme a value as possible."@en . _:vb6838524 . _:vb6838524 "Sure, any planar graph can be five-colored. But that result is not sharp: in fact, any planar graph can be four-colored. That is sharp: the same can't be said for any lower number."@en .