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Dendroidal set : ウィキペディア英語版 | Dendroidal set In mathematics, a dendroidal set is a generalization of simplicial sets introduced by . They have the same relation to (colored symmetric) operads, also called symmetric multicategories, that simplicial sets have to categories. ==Definition==
A dendroidal set is a contravariant functor from Ω to sets, where Ω is the tree category consisting of finite rooted trees considered as operads, whose morphisms are operad morphisms. The trees are allowed to have some edges with a vertex on only one side; these are called outer edges, and the root is one of the outer edges.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Dendroidal set」の詳細全文を読む
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