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Common Set Theory Notation

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$\in$

Element of

$\subset$

Subset of

$\mathbb{Q}$

Set of rational numbers

$\mathbb{C}$

Set of complex numbers

$\supset$

Superset of

$\emptyset$

Empty set

$\cap$

Intersection

$\cup$

Union

$\setminus$

Set difference

$\mathbb{R}$

Set of all real numbers

$\mathbb{N}$

Set of natural numbers

$\mathbb{Z}$

Set of integers

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