Theorem Ordinal.ord_cof_eq

Modification history

2026-05-25 23:43
Mathlib/SetTheory/Cardinal/Cofinality/Ordinal.lean
chore: rename `Order.cof_eq` → `Order.exists_cof_eq` (#39851)
Deleted Ordinal.ord_cof_eqView on Github →
2026-03-15 22:43
Mathlib/SetTheory/Cardinal/Cofinality.lean
refactor: redefine `Order.cof` for a preorder (#35513) …
Modified Ordinal.ord_cof_eqView on Github →
2023-02-24 13:27
Mathlib/SetTheory/Cardinal/Cofinality.lean
feat port: SetTheory.Cardinal.Cofinality (#2479)
Added Ordinal.ord_cof_eqView on Github →