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bn:01417918n
Noun Concept
Categories: Homotopy theory, Group theory, Higher category theory
EN
2-group  2-dimensional group  2-dimensional higher group  gr-category  groupal groupoid
EN
In mathematics, particularly the branch called category theory, a 2-group is a groupoid with a way to multiply objects, making it resemble a group. Wikipedia
Definitions
Relations
Sources
EN
In mathematics, particularly the branch called category theory, a 2-group is a groupoid with a way to multiply objects, making it resemble a group. Wikipedia
Monoidal category in which every morphism is invertible and every object has a weak inverse; categorification of the notion of a group Wikidata
IS A
categorification
monoidal category
NAMED AFTER
group
STUDIED BY
higher category theory
Wikipedia
EN
2-group
Wikidata
EN
2-group
Wikidata Alias
EN
2-dimensional group, 2-dimensional higher group, gr-category, groupal groupoid

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