# bijection

A *surjection* is a mapping (function) between sets that is both an injection (‘one-to-one’) and a surjection (‘onto’). See the function article for a complete exposition.

- [MLA] “bijection.”
*Platonic Realms Interactive Mathematics Encyclopedia.*Platonic Realms, 8 Mar 2013. Web. 8 Mar 2013. <http://platonicrealms.com/> - [APA] bijection (8 Mar 2013). Retrieved 8 Mar 2013 from the
*Platonic Realms Interactive Mathematics Encyclopedia:*http://platonicrealms.com/encyclopedia/bijection/