Theorem Cardinal.aleph1_le_mk_iff

Modification history

2026-10-10 09:42
Mathlib/SetTheory/Cardinal/Aleph.lean
chore: delete deprecated declarations to March 2026 (#44240)
Deleted Cardinal.aleph1_le_mk_iffView on Github →
2026-02-25 00:49
Mathlib/SetTheory/Cardinal/Aleph.lean
feat(SetTheory/Cardinal): generalize infinite pigeonhole principle (#34091) …
Added Cardinal.aleph1_le_mk_iffView on Github →