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Theorem opposite.unop_ne_zero_iff

Modification history

2021-11-19 12:03
src/algebra/opposites.lean
refactor(algebra/opposites): use mul_opposite for multiplicative opposite (#10302) …
Deleted opposite.unop_ne_zero_iffView on Github →
2021-05-24 14:07
src/algebra/opposites.lean
feat(algebra/opposites): `(un)op_ne_zero_iff` (#7698)
Added opposite.unop_ne_zero_iffView on Github →