Set difference

Definition · applies to sets · also called $A \setminus B$, relative complement

High school

Consider1 two sets $A$ and $B$. The set difference $A \setminus B$ is the set of elements of $A$ that are not in $B$.

Examples

Worked examples

• $A = \lbrace 1, 2 \rbrace$ and $B = \lbrace 3, 4 \rbrace$ : $A \setminus B = \lbrace 1, 2 \rbrace$ Elementary

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