Fongshan (matimatix)
Ina matimatix, fongshan a di rilieshan bitwiin wah set a hinput ah wah set a poermisebl output wid di prapati we hebri dege hinput rilietid tu hegzakli wan output.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/3/3f/Arrow_diagram_of_a_function_%28non-injective_and_non-surjective%29.svg/150px-Arrow_diagram_of_a_function_%28non-injective_and_non-surjective%29.svg.png)
Ina matimatix, fongshan a di rilieshan bitwiin wah set a hinput ah wah set a poermisebl output wid di prapati we hebri dege hinput rilietid tu hegzakli wan output.