About: Span (category theory)

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In category theory, a span, roof or correspondence is a generalization of the notion of relation between two objects of a category. When the category has all pullbacks (and satisfies a small number of other conditions), spans can be considered as morphisms in a category of fractions. The notion of a span is due to Nobuo Yoneda (1954) and Jean Bénabou (1967).

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  • In category theory, a span, roof or correspondence is a generalization of the notion of relation between two objects of a category. When the category has all pullbacks (and satisfies a small number of other conditions), spans can be considered as morphisms in a category of fractions. The notion of a span is due to Nobuo Yoneda (1954) and Jean Bénabou (1967). (en)
  • 범주론에서 펼침(영어: span 스팬[*])은 범주 속의, 같은 정의역을 갖는 사상의 순서쌍이다. (ko)
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  • In category theory, a span, roof or correspondence is a generalization of the notion of relation between two objects of a category. When the category has all pullbacks (and satisfies a small number of other conditions), spans can be considered as morphisms in a category of fractions. The notion of a span is due to Nobuo Yoneda (1954) and Jean Bénabou (1967). (en)
  • 범주론에서 펼침(영어: span 스팬[*])은 범주 속의, 같은 정의역을 갖는 사상의 순서쌍이다. (ko)
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  • 펼침 (ko)
  • Span (category theory) (en)
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