A function from a set A to a set B is an injection (injective function, one-to-one function) if every element in B corresponds to a most one element in A.
Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.