Current library: Alpha v34, 4,223 checked-use theorems; Stable remains 432. Historical first admissions, original proof editions, and non-admitted aliases are preserved. Exact original first-admission records.
Sparse modes suppress visual objects only. Every exact proof and notation relation remains in the selected-node panel and graph data; large views use compact clickable marks.
Proof arrows run from prerequisite to dependent; notation arrows run from a theorem or definition to the definition it uses. Select any node to inspect every direct relation.
theorem definition proof dependency uses definition