Theorem Finset.sdiff_singleton_eq_self

Modification history

2025-04-11 00:24
Mathlib/Data/Finset/Basic.lean
chore: delete >6 month old deprecations (2024-10 01-10) (#23928) …
Deleted Finset.sdiff_singleton_eq_selfView on Github →
2024-10-04 03:58
Mathlib/Data/Finset/Basic.lean
chore(Finset): remove old-style spellings (#17327) …
Modified Finset.sdiff_singleton_eq_selfView on Github →
2023-04-24 08:51
Mathlib/Data/Finset/Basic.lean
feat: `insert` and `erase` lemmas (#3569) …
Added Finset.sdiff_singleton_eq_selfView on Github →