Theorem Ordinal.cof_omega

Modification history

2025-07-11 17:39
Mathlib/SetTheory/Cardinal/Cofinality.lean
refactor(SetTheory/Ordinal/Arithmetic): `Ordinal.IsLimit` → `Order.IsSuccLimit` (#26643) …
Modified Ordinal.cof_omegaView on Github →
2024-11-01 19:53
Mathlib/SetTheory/Cardinal/Cofinality.lean
feat(SetTheory/Cardinal/Aleph): simpler definition of `aleph` (#17674) …
Added Ordinal.cof_omegaView on Github →
2024-10-03 10:05
Mathlib/SetTheory/Cardinal/Cofinality.lean
refactor(SetTheory/Ordinal/Basic): deprecate Ordinal.omega in favor of Ordinal.omega0 (#17158) …
Deleted Ordinal.cof_omegaView on Github →
2023-02-24 13:27
Mathlib/SetTheory/Cardinal/Cofinality.lean
feat port: SetTheory.Cardinal.Cofinality (#2479)
Added Ordinal.cof_omegaView on Github →