Theorem Order.aleph0_le_cof_iff

Modification history

2026-05-25 23:43
Mathlib/SetTheory/Cardinal/Cofinality/Basic.lean
chore: rename `Order.cof_eq` → `Order.exists_cof_eq` (#39851)
Modified Order.aleph0_le_cof_iffView on Github →
2026-05-10 00:45
Mathlib/SetTheory/Cardinal/Cofinality/Basic.lean
chore: split `SetTheory.Cardinal.Cofinality` (#38363) …
Modified Order.aleph0_le_cof_iffView on Github →
2026-03-23 01:32
Mathlib/SetTheory/Cardinal/Cofinality.lean
feat: cof α < ℵ₀ ↔ cof α ≤ 1 (#36976)
Added Order.aleph0_le_cof_iffView on Github →