fact: Definition Quotient_rec2 `{Funext} {B : HSet} {dclass : A -> A -> B} {dequiv : forall x x', R x x' -> forall y y', R y y' -> dclass x y = dclass x' y'} : A / R -> A / R -> B.
imports: Basics Types HSet TruncType Colimits.GraphQuotient Truncations.Core PropResizing