A [[Bijective]] $f: A \to B$ is a [[Function]] that is [[Injective]] and [[Surjective]]. ![[../../00 Asset Bank/Pasted image 20250129093427.png|invert_Sepia]] If a [[Set]] $A$ has a [[Bijective|Bijection]] to a set $B$, then both sets have equal [[Cardinality]] $|A| = |B|$.