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| '''Injectivity''' is a property of [[Analysis/Functions|functions]] indicating that it is 1-to-1. | '''Injectivity''' is a property of [[Analysis/Functions|functions]] indicating that they are 1-to-1. |
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| A function that is both injective and [[Analysis/Surjectivity|surjective]] is called '''bijective'''. |
Injectivity
Injectivity is a property of functions indicating that they are 1-to-1.
Contents
Description
A function is injective if f(x1) = f(x2) implies x1 = x2.
A function that is both injective and surjective is called bijective.