fact: Definition DivRig_isrunit_zero: ∏ x : F, x + 0 = x := isDivRig_isrunit_x0 (DivRig_isDivRig F).
imports: UniMath.Foundations.Sets UniMath.Algebra.RigsAndRings UniMath.Algebra.Domains_and_Fields UniMath.MoreFoundations.Tactics