fact: Definition presented_gr_extend {X : hSet} {R : hrel (free_gr X)} {Y : gr} (f : X → Y) (H : iscomprelfun R (free_gr_extend f)) : monoidfun (presented_gr X R) Y.
imports: UniMath.MoreFoundations.Subtypes UniMath.MoreFoundations.Sets UniMath.Algebra.Monoids UniMath.Algebra.Groups UniMath.Algebra.IteratedBinaryOperations UniMath.Combinatorics.Lists