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arXiv 1102.2512math.ATmath.CT
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部分模型范畴及其单纯神经

Partial model categories and their simplicial nerves

C. Barwick, D. M. Kan

摘要:

在本注记中,我们考虑部分模型范畴,我们的意思是相对范畴,满足一个削弱版本的模型范畴公理只涉及弱等价。更准确地说,部分模型范畴将是一个相对范畴,它具有六分之二的性质,并允许一个3-箭头演算。然后,我们表明,查尔斯Rezk的结果,从单纯模型类别通过采取Reedy的替代其单纯神经的单纯空间是一个完整的Segal空间也适用于这些部分模型类别。我们还注意到,相反,每一个完整的西格尔空间是里德相当于单纯神经的部分模型范畴,实际上是同伦满子范畴的一类图的单纯集。

英文摘要:

In this note we consider partial model categories, by which we mean relative categories that satisfy a weakened version of the model category axioms involving only the weak equivalences. More precisely, a partial model category will be a relative category that has the two out of six property and admits a 3-arrow calculus. We then show that Charles Rezk's result that the simplicial space obtained from a simplicial model category by taking a Reedy fibrant replacement of its simplicial nerve is a complete Segal space also holds for these partial model categories. We also note that conversely every complete Segal space is Reedy equivalent to the simplicial nerve of a partial model category and in fact of a homotopically full subcategory of a category of diagrams of simplicial sets.

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