Overview

injection


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A function with the property that distinct elements in its domain are mapped onto distinct elements in the codomain. Formally, f : XY is an injection if f(x1) = f(x2) implies x1 = x2 A common use of injections is to map or include elements of some smaller set, such as the set of integers, into a larger set, such as the set of real numbers.

f : XY

f(x1) = f(x2) implies x1 = x2

Subjects: Computing.


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