Theorem Ordinal.omega_lt_omega1

Modification history

2024-10-23 21:11
Mathlib/SetTheory/Cardinal/Aleph.lean
feat(SetTheory/Cardinal/Aleph): introduce `omega` function (#17669) …
Deleted Ordinal.omega_lt_omega1View on Github →
2024-10-11 12:40
Mathlib/SetTheory/Cardinal/Aleph.lean
chore(SetTheory/Cardinal/Ordinal): split file (#16990) …
Added Ordinal.omega_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) …
Deleted Ordinal.omega_lt_omega1View on Github →
2023-09-03 17:06
Mathlib/SetTheory/Cardinal/Ordinal.lean
feat(SetTheory): definition of initial ordinals, ω₁ as an ordinal, ordinal-indexed unions (#6404) …
Added Ordinal.omega_lt_omega1View on Github →