mathlib
386962c2 - feat(algebra/char_zero): `neg_eq_self_iff` (#7916)

Commit

4 years ago

feat(algebra/char_zero): `neg_eq_self_iff` (#7916) `-a = a ↔ a = 0` and `a = -a ↔ a = 0`.

Author

benjamindavidson

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