Theorem neg_add_self

Modification history

2022-10-14 00:13
Mathlib/Algebra/Group/Defs.lean
feat: replace Algebra/Group/{Defs,Basic} with direct ports from mathlib3 (#457) …
Deleted neg_add_selfView on Github →
2021-05-14 12:59
Mathlib/Algebra/Group/Defs.lean
feat(Algebra/*): beginning of algebra hierarchy (#4)
Added neg_add_selfView on Github →