Theorem Cardinal.toNat_eq_iff_eq_of_lt_aleph0

Modification history

2024-02-15 23:16
Mathlib/SetTheory/Cardinal/ToNat.lean
refactor(Cardinal): redefine `toNat` and `toPartENat` (#10472) …
Modified Cardinal.toNat_eq_iff_eq_of_lt_aleph0View on Github →
2024-02-13 12:46
Mathlib/SetTheory/Cardinal/Basic.lean
chore(Cardinal/Basic): split (#10466) …
Modified Cardinal.toNat_eq_iff_eq_of_lt_aleph0View on Github →
2023-06-26 11:36
Mathlib/SetTheory/Cardinal/Basic.lean
feat(SetTheory/Cardinal/Finite): prove lemmas about PartENat.card (#5307) …
Added Cardinal.toNat_eq_iff_eq_of_lt_aleph0View on Github →