Mathlib v3 is deprecated. Go to Mathlib v4

Theorem set.mem_diff_singleton_empty

Modification history

2022-12-05 00:55
src/data/set/basic.lean
chore(data/{finset,set}/basic): Align lemmas (#17805) …
Modified set.mem_diff_singleton_emptyView on Github →
2019-04-20 20:07
src/data/set/basic.lean
feat(data/[fin]set): add some more basic properties of (finite) sets (#948) …
Added set.mem_diff_singleton_emptyView on Github →