▼	Set of symbols
▼	Alphabet
▼	Deduction system
▼	Theory
▼	Zermelo-Fraenkel set theory
▼	Set
▼	Binary cartesian set product
▼	Binary relation
▼	Map
▼	Function
▼	Real collection function
▼	Euclidean real function
▼	Real function
▼	Rational function
▼	Integer function
▼	Natural number function
▼	Boolean function

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