Theorem Ordinal.omega0_lt_omega1

Modification history

2025-12-22 18:39
Mathlib/SetTheory/Cardinal/Aleph.lean
refactor: standardize spelling of `ℵ₁` as `aleph_one` (#33198) …
Deleted Ordinal.omega0_lt_omega1View on Github →
2024-10-23 21:11
Mathlib/SetTheory/Cardinal/Aleph.lean
feat(SetTheory/Cardinal/Aleph): introduce `omega` function (#17669) …
Added Ordinal.omega0_lt_omega1View on Github →
2024-10-11 12:40
Mathlib/SetTheory/Cardinal/Arithmetic.lean
chore(SetTheory/Cardinal/Ordinal): split file (#16990) …
Deleted Ordinal.omega0_lt_omega1View 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) …
Added Ordinal.omega0_lt_omega1View on Github →