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Theorem dmatrix.subsingleton_of_empty_left

Modification history

2022-08-16 10:36
src/data/matrix/dmatrix.lean
chore(*): restore `subsingleton` instances and remove hacks (#16046) …
Deleted dmatrix.subsingleton_of_empty_leftView on Github →
2021-07-01 16:37
src/data/matrix/dmatrix.lean
feat(logic/is_empty): add some simp lemmas and unique instances (#7832) …
Modified dmatrix.subsingleton_of_empty_leftView on Github →
2021-04-16 17:35
src/data/matrix/dmatrix.lean
feat(category_theory): the additive envelope, Mat_ C (#6845) …
Added dmatrix.subsingleton_of_empty_leftView on Github →