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arXiv 1012.1587math.AT
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对称单范畴的另一种表示

An Alternative Presentation of the Symmetric-Simplicial Category

Eric R. Antokoletz

摘要:

通过扩大集合{0,1,.,}之间的单调函数范畴Ord,得到了单调-单纯算子范畴Fin n},以包含相同集合之间的所有函数。Marco Grandis使用标准生成器Ord(coface和codegeneracies)以及生成Fin中置换的相邻转置来演示Fin。本说明的目的是建立一个替代的介绍Fin的代码生成被取代的特殊地图,我们称之为准代码生成。我们还证明了一个独特的因式分解定理的产品的cofaces和准codegeneracies类似的标准唯一因式分解订单。这介绍已被作者用来构造对称超交叉复合物(将在其他地方出版),这是代数模型同伦类型的空间的基础上的超交叉复合物的Carrasco和Cegarra。

英文摘要:

The category Fin of symmetric-simplicial operators is obtained by enlarging the category Ord of monotonic functions between the sets {0,1,...,n} to include all functions between the same sets. Marco Grandis has given a presentation of Fin using the standard generators Ord (cofaces and codegeneracies) as well as the adjacent transpositions which generate the permutations in Fin. The purpose of this note is to establish an alternative presentation of Fin in which the codegeneracies are replaced by special maps which we call quasi-codegeneracies. We also prove a unique factorization theorem for products of cofaces and quasi-codegeneracies analogous to the standard unique factorizations in Ord. This presentation has been used by the author to construct symmetric hypercrossed complexes (to be published elsewhere) which are algebraic models for homotopy types of spaces based on the hypercrossed complexes of Carrasco and Cegarra.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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