Theorem Ordinal.le_cof_map_of_isNormal

Modification history

2026-03-20 14:17
Mathlib/SetTheory/Cardinal/Cofinality.lean
feat: `cof α = cof β` given a strictly monotonic function `f : α → β` with cofinal range (#36703) …
Added Ordinal.le_cof_map_of_isNormalView on Github →