Theorem Ordinal.IsNormal.cof_le

Modification history

2025-12-26 17:05

Mathlib/SetTheory/Cardinal/Cofinality.lean

refactor: deprecate `Ordinal.IsNormal` for `Order.IsNormal` (#33294)

Deleted Ordinal.IsNormal.cof_le View on Github →

2023-02-24 13:27

Mathlib/SetTheory/Cardinal/Cofinality.lean

feat port: SetTheory.Cardinal.Cofinality (#2479)

Added Ordinal.IsNormal.cof_le View on Github →