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Let us first consider the representation given below.
The image given above is a cipher circle. Here \(A \rightarrow D\), \(B \rightarrow E\), and so on.
When represented as a function, the cipher circle is both one-to-one and onto.
Bijection:
A function that in both one-to-one and onto is a bijection.
Since the bijection function is one-to-one and onto, it is also called one-to-one correspondence.
Also, a bijective function is both surjective and injective.
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