neg_neg

∀ {G : Type u_1} [inst : InvolutiveNeg G] (a : G), - -a = a

Defined in: Mathlib.Algebra.Group.Defs
Cited by: 960 results in Mathlib
Foundations: Depth 3 from the axioms, rests on 5 definitions · uses no axioms
Assumes: InvolutiveNeg

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