Definition nattohzandplus ( n m : nat ) : ( nattohz ( n + m )%nat ) = ( nattohz n + nattohz m ) := isbinop1funtoringdiff natcommrig n m .
Require Import UniMath.MoreFoundations.PartA. Require Import UniMath.Algebra.Monoids. Require Import UniMath.Algebra.Groups.