▼	Set of symbols
▼	Alphabet
▼	Deduction system
▼	Theory
▼	Zermelo-Fraenkel set theory
▼	Set
▼	Binary cartesian set product
▼	Binary relation
▼	Binary endorelation
▼	Preordering relation
▼	Partial ordering relation
▼	Ordering relation
▼	Ordered set
▼	Dedekind cut
▼	Set of real numbers
▼	Set of basic numbers
▼	Basic number

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