Theorem Ordinal.cof_ord_le

Modification history

2026-03-20 14:17
Mathlib/SetTheory/Cardinal/Cofinality.lean
feat: `cof α = cof β` given a strictly monotonic function `f : α → β` with cofinal range (#36703) …
Modified Ordinal.cof_ord_leView on Github →
2023-02-24 13:27
Mathlib/SetTheory/Cardinal/Cofinality.lean
feat port: SetTheory.Cardinal.Cofinality (#2479)
Added Ordinal.cof_ord_leView on Github →