fact: Definition hzrdistr ( a b c : hz ) : ( a + b ) * c = ( a * c ) + ( b * c ) := ringrdistr hz a b c.
imports: UniMath.Tactics.EnsureStructuredProofs UniMath.Foundations.PartA UniMath.Foundations.Propositions UniMath.Foundations.NaturalNumbers UniMath.Algebra.RigsAndRings UniMath.Algebra.Domains_and_Fields UniMath.NumberSystems.Integers UniMath.Algebra.Monoids