Theorem Ordinal.cof_iSup_le_lift

Modification history

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