Theorem Cardinal.nat_lt_aleph0

Modification history

2026-08-11 12:14
Mathlib/SetTheory/Cardinal/Basic.lean
chore: delete deprecated declarations/modules from January 2026 (#42075) …
Deleted Cardinal.nat_lt_aleph0View on Github →
2026-01-25 16:10
Mathlib/SetTheory/Cardinal/Basic.lean
chore: add deprecation for Cardinal.nat_lt_aleph0 (#34385) …
Added Cardinal.nat_lt_aleph0View on Github →
2026-01-21 17:08
Mathlib/SetTheory/Cardinal/Basic.lean
chore(SetTheory/Cardinal): remove explicit argument to `nat_lt_aleph0` (#33990) …
Deleted Cardinal.nat_lt_aleph0View on Github →
2023-02-11 10:18
Mathlib/SetTheory/Cardinal/Basic.lean
feat: port SetTheory.Cardinal.Basic (#2084)
Added Cardinal.nat_lt_aleph0View on Github →