olemus
morfism, mis ühtlasi on sürjektiivne funktsioon
=
a homomorphism which is a surjection

ülevaateid
https://en.wikipedia.org/wiki/Epimorphism

https://mathworld.wolfram.com/Epimorphism.html

https://encyclopediaofmath.org/wiki/Epimorphism

https://www.johndcook.com/blog/2018/08/25/epi-and-mono/

https://proofwiki.org/wiki/Definition:Epimorphism_(Abstract_Algebra)