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Article
https://en.wikibooks.org/wiki/Set_Theory/Relations
Relations
Article
https://en.wikibooks.org/wiki/Set_Theory/Relations
about
binary relation
inLanguage
en
http://www.w3.org/2001/XMLSchema#string
isPartOf
https://en.wikibooks.org/
name
Set Theory/Relations
@en
type
Article