Theorem Cardinal.le_aleph0_iff_set_countable

Modification history

2024-02-04 02:08
Mathlib/SetTheory/Cardinal/Basic.lean
refactor(Set/Countable): redefine `Set.Countable` (#9831) …
Modified Cardinal.le_aleph0_iff_set_countableView on Github →
2023-07-03 11:03
Mathlib/SetTheory/Cardinal/Basic.lean
fix: precedence of `#` (#5623)
Modified Cardinal.le_aleph0_iff_set_countableView on Github →
2023-02-11 10:18
Mathlib/SetTheory/Cardinal/Basic.lean
feat: port SetTheory.Cardinal.Basic (#2084)
Added Cardinal.le_aleph0_iff_set_countableView on Github →