Lemma isbinopabgrdiffrel (X : abmonoid) {L : hrel X} (is : isbinophrel L) : @isbinophrel (abgrdiff X) (abgrdiffrel X is). Proof. intros. apply (isbinopquotrel (binopeqrelabgrdiff X) (iscomprelabgrdiffrelint X is)). apply (isbinopabgrdiffrelint X is). Defined.
Require Import UniMath.MoreFoundations.Orders. Require Import UniMath.MoreFoundations.Subtypes.