Matches in DBpedia 2014 for { ?s ?p In mathematics, especially in category theory and homotopy theory, a groupoid (less often Brandt groupoid or virtual group) generalises the notion of group in several equivalent ways. A groupoid can be seen as a:Group with a partial function replacing the binary operation;Category in which every morphism is invertible.. }
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- Groupoid comment "In mathematics, especially in category theory and homotopy theory, a groupoid (less often Brandt groupoid or virtual group) generalises the notion of group in several equivalent ways. A groupoid can be seen as a:Group with a partial function replacing the binary operation;Category in which every morphism is invertible.".