Theorem Cardinal.aleph1_le_mk

Modification history

2026-03-31 08:08
Mathlib/SetTheory/Cardinal/Aleph.lean
feat: simplify ℵ₁ ≤ c to ℵ₀ < c (#37024) …
Modified Cardinal.aleph1_le_mkView on Github →
2026-02-25 00:49
Mathlib/SetTheory/Cardinal/Aleph.lean
feat(SetTheory/Cardinal): generalize infinite pigeonhole principle (#34091) …
Added Cardinal.aleph1_le_mkView on Github →