= Injectivity = '''Injectivity''' is a property of [[Analysis/Functions|functions]] indicating that they are 1-to-1. <> ---- == Description == A [[Analysis/Functions|function]] is '''injective''' if ''f(x,,1,,) = f(x,,2,,)'' implies ''x,,1,, = x,,2,,''. A function that is both injective and [[Analysis/Surjectivity|surjective]] is called '''bijective'''. ---- CategoryRicottone