We show that nonexistence theorems for continuous surjections between continua and related results extend to almost continuous functions.
There is a natural duality between proper surjections and proper injections and between the M and the N forms.
The function s is not a surjection because it never takes on an odd value.
Derivatives
surjective
adjectivesəːˈdʒɛktɪv
Mathematics
We prove that every finite, simple, surjective algebra having no proper subalgebras is either quasiprimal or affine or isomorphic to an algebra term equivalent to a matrix power of a unary permutational algebra.