Definition afldfrac0 : acommring. Proof. split with ( commringfrac A ( aintdomazerosubmonoid A ) ). split with afldfracapart. split. - split. + apply isbinapartlafldfracop1. + apply isbinapartrafldfracop1. - split. + apply isbinapartlafldfracop2. + apply isbinapartrafldfracop2. Defined.
Require Import UniMath.PAdics.lemmas. Require Import UniMath.Algebra.RigsAndRings. Require Import UniMath.Algebra.Domains_and_Fields.