Theorem Cardinal.isRegular_preAleph_succ

Modification history

2026-10-10 09:42
Mathlib/SetTheory/Cardinal/Regular.lean
chore: delete deprecated declarations to March 2026 (#44240)
Deleted Cardinal.isRegular_preAleph_succView on Github →
2026-03-30 08:57
Mathlib/SetTheory/Cardinal/Regular.lean
feat: cof (ω_ (o + 1)) = ℵ_ (o + 1) (#37020)
Modified Cardinal.isRegular_preAleph_succView on Github →
2025-03-11 00:25
Mathlib/SetTheory/Cardinal/Cofinality.lean
chore(SetTheory/Cardinal/Cofinality): split file (#21972) …
Modified Cardinal.isRegular_preAleph_succView on Github →
2024-10-23 09:32
Mathlib/SetTheory/Cardinal/Cofinality.lean
refactor(SetTheory/Cardinal/Aleph): `aleph'` → `preAleph` (#18099) …
Added Cardinal.isRegular_preAleph_succView on Github →