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arXiv 0902.1954math.CTmath.AT
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作为同伦运算模型的树型集

Dendroidal sets as models for homotopy operads

Denis-Charles Cisinski, Ieke Moerdijk

摘要:

将Joyal的无穷范畴同伦理论推广到树状集范畴,定义了无穷运算同伦理论。本文证明了树状集范畴具有一个模范畴结构,其映射对象是无穷操作数(即树状内Kan复形)。这扩展了无限范畴理论,在这个意义上,单纯集上的Joyal模型范畴结构(其映射对象是无限范畴)可以通过简单地在点上切片而从树状集上的模型范畴结构中恢复出来。

英文摘要:

The homotopy theory of infinity-operads is defined by extending Joyal's homotopy theory of infinity-categories to the category of dendroidal sets. We prove that the category of dendroidal sets is endowed with a model category structure whose fibrant objects are the infinity-operads (i.e. dendroidal inner Kan complexes). This extends the theory of infinity-categories in the sense that the Joyal model category structure on simplicial sets whose fibrant objects are the infinity-categories is recovered from the model category structure on dendroidal sets by simply slicing over the point.

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