Current library: Alpha v34, 4,223 checked-use theorems; Stable remains 432. Historical first admissions, original proof editions, and non-admitted aliases are preserved.
Definition in prerequisite notation
∀ d. Dvd(d,a) → Dvd(d,b) → d = 1Only definitions earlier in this acyclic notation graph are used here.
Hygienic expanded first-order definition
forall d. (exists x. a = d * x) -> (exists y. b = d * y) -> d = 1The unchanged native kernel never receives this surface symbol. Binder-safe expansion produces only its existing first-order syntax.
Direct definition dependencies
Definitions depending on this notation
none