Certainly Homomorphism is a prerequisite to establish an “Isomorphism”(Bijection), but what does a Homomorphism tell independently when it is established between two sets?
Homomorphism relates two sets as it is defined. But does it tell anything else? Or it is a tool for relating two sets only.
It would be nice to have an example where Homomorophism plays a big role besides being a condition for Isomorphism?