Function
From Wikiversity
A relation f ⊂ X×Y is said to be a function if every y in Y satisfies the following axiom.
If (x1,y) is in f and (x2,y) is in f then x1 = x2.
One writes f(x) = y if (x,y) is in f.
- This page was last modified on 19 June 2011, at 06:16.
- Text is available under the Creative Commons Attribution/Share-Alike License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy.
