fact: Definition abgr_image {A B : abgr} (f : monoidfun A B) : @subabgr B := @subgrconstr B (@abgr_image_hsubtype A B f) (abgr_image_issubgr f).
imports: UniMath.MoreFoundations.Orders UniMath.MoreFoundations.Tactics UniMath.MoreFoundations.Subtypes UniMath.Algebra.BinaryOperations UniMath.Algebra.Monoids