= Surjectivity = '''Surjectivity''' is a property of [[Analysis/Functions|functions]] indicating that they are onto. <> ---- == Description == A [[Analysis/Functions|function]] is '''surjective''' if ''f(A) = B''. In other words, every member of ''B'' is mapped onto. A function that is both [[Analysis/Injectivity|injective]] and surjective is called '''bijective'''. ---- CategoryRicottone