Theorem Cardinal.aleph0_le_aleph'

Modification history

2024-10-23 09:32

Mathlib/SetTheory/Cardinal/Aleph.lean

refactor(SetTheory/Cardinal/Aleph): `aleph'` → `preAleph` (#18099) …

Modified Cardinal.aleph0_le_aleph'View on Github →

2024-10-11 12:40

Mathlib/SetTheory/Cardinal/Aleph.lean

chore(SetTheory/Cardinal/Ordinal): split file (#16990) …

Modified Cardinal.aleph0_le_aleph'View on Github →

2024-10-03 10:05

Mathlib/SetTheory/Cardinal/Ordinal.lean

refactor(SetTheory/Ordinal/Basic): deprecate Ordinal.omega in favor of Ordinal.omega0 (#17158) …

Modified Cardinal.aleph0_le_aleph'View on Github →

2023-02-23 13:50

Mathlib/SetTheory/Cardinal/Ordinal.lean

feat: port SetTheory.Cardinal.Ordinal (#2463)

Added Cardinal.aleph0_le_aleph'View on Github →