fact: Definition presented_abgrfun {X Y : hSet} {R : hrel (free_abgr X)} {S : hrel (free_abgr Y)} (f : X → Y) (H : iscomprelrelfun R S (free_abgrfun f)) : monoidfun (presented_abgr X R) (presented_abgr Y S).
imports: UniMath.MoreFoundations.Subtypes UniMath.MoreFoundations.Sets UniMath.Algebra.Monoids UniMath.Algebra.Groups UniMath.Algebra.IteratedBinaryOperations UniMath.Combinatorics.Lists