Theorem Ordinal.aleph0_le_cof

Modification history

2026-10-10 09:42
Mathlib/SetTheory/Cardinal/Cofinality/Ordinal.lean
chore: delete deprecated declarations to March 2026 (#44240)
Deleted Ordinal.aleph0_le_cofView on Github →
2025-07-11 17:39
Mathlib/SetTheory/Cardinal/Cofinality.lean
refactor(SetTheory/Ordinal/Arithmetic): `Ordinal.IsLimit` → `Order.IsSuccLimit` (#26643) …
Modified Ordinal.aleph0_le_cofView on Github →
2023-02-24 13:27
Mathlib/SetTheory/Cardinal/Cofinality.lean
feat port: SetTheory.Cardinal.Cofinality (#2479)
Added Ordinal.aleph0_le_cofView on Github →