surjection
/sərˈdʒɛkʃən/
noun
- In mathematics, a function that maps every element of the output set to at least one element of the input set; a function that is onto.
- The teacher explained that a surjection covers every value in the target set.
- A surjection is also called an onto function because it hits every possible output.
- In our algebra class, we proved that the function f(x) = x^3 is a surjection from the real numbers to the real numbers.