Theorem Nat.card_eq_zero_of_isEmpty

Modification history

2023-12-18 10:05
Mathlib/SetTheory/Cardinal/Finite.lean
feat: demote the instance Fintype.ofIsEmpty to a def (#8816) …
Deleted Nat.card_eq_zero_of_isEmptyView on Github →
2023-11-10 21:41
Mathlib/SetTheory/Cardinal/Finite.lean
feat: When `Nat.card` is zero (#8202) …
Added Nat.card_eq_zero_of_isEmptyView on Github →