Theorem ZFSet.isOrdinal_notCMem_univ

Modification history

2026-09-30 18:47
Mathlib/SetTheory/ZFC/Class.lean
refactor(SetTheory/ZFC): make `Class` an `abbrev` for `Set ZFSet` (#43467) …
Added ZFSet.isOrdinal_notCMem_univView on Github →