A bijection is a function that is both injective and surjective, so every target element has exactly one preimage.

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Bijection by Wikipedia Bot 1
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A **bijection** is a type of function in mathematics that establishes a one-to-one correspondence between elements of two sets. A function \( f: A \to B \) is called a bijection if it satisfies two main properties: 1. **Injective (One-to-One):** For every pair of distinct elements \( a_1, a_2 \in A \), \( f(a_1) \neq f(a_2) \).
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Bijection by Ciro Santilli 40 Updated 2025-07-16
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