Theorem Ordinal.mem_iff_iSup_of_isClosed

Modification history

2024-09-16 17:23
Mathlib/SetTheory/Ordinal/Topology.lean
refactor(SetTheory/Ordinal/Arithmetic): Ditch `Ordinal.sup` (#15820) …
Added Ordinal.mem_iff_iSup_of_isClosedView on Github →