fact: Definition Npair_to_Z (x : SRpair N) : Z := ('pos x - 'neg x)%mc.
imports: Coq.ZArith.BinInt Coq.setoid_ring.Ring Coq.Arith.Arith Coq.NArith.NArith Coq.ZArith.ZArith Coq.Numbers.Integer.Binary.ZBinary MathClasses.interfaces.abstract_algebra MathClasses.interfaces.integers MathClasses.implementations.natpair_integers MathClasses.implementations.stdlib_binary_naturals MathClasses.interfaces.additional_operations MathClasses.interfaces.orders MathClasses.implementations.nonneg_integers_naturals