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Theorem opposite.op_add

Modification history

2021-11-19 12:03
src/algebra/opposites.lean
refactor(algebra/opposites): use mul_opposite for multiplicative opposite (#10302) …
Deleted opposite.op_addView on Github →
2019-10-05 05:18
src/algebra/opposites.lean
feat(algebra/opposites): add some trivial `@[simp]` lemmas (#1508)
Added opposite.op_addView on Github →