Theorem Cardinal.aleph0_lt_aleph_one

Modification history

2026-03-31 08:08
Mathlib/SetTheory/Cardinal/Aleph.lean
feat: simplify ℵ₁ ≤ c to ℵ₀ < c (#37024) …
Modified Cardinal.aleph0_lt_aleph_oneView on Github →
2024-10-16 00:08
Mathlib/SetTheory/Cardinal/Aleph.lean
feat(SetTheory/Cardinal/Aleph): add notation for `aleph` and `beth` (#17671)
Modified Cardinal.aleph0_lt_aleph_oneView on Github →
2024-10-11 12:40
Mathlib/SetTheory/Cardinal/Aleph.lean
chore(SetTheory/Cardinal/Ordinal): split file (#16990) …
Modified Cardinal.aleph0_lt_aleph_oneView on Github →
2023-02-23 13:50
Mathlib/SetTheory/Cardinal/Ordinal.lean
feat: port SetTheory.Cardinal.Ordinal (#2463)
Added Cardinal.aleph0_lt_aleph_oneView on Github →