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arXiv math/0602084math.CTmath.AT
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弱单位与同伦3-型

Weak units and homotopy 3-types

André Joyal, Joachim Kock

摘要:

我们证明了每个辫子幺半范畴都是由弱单位$I$的$\End(I)$在完全严格monoidal 2-范畴中产生的。这意味着在3维中辛普森弱单位猜想的一个版本,即在所有方面都严格的单对象3-群胚,除了对象只有弱单位箭头,可以模拟所有连通的,单连通同伦3-类型。证明有一个清晰直观的内容,并依赖于一个几何参数与字符串图和配置空间。

英文摘要:

We show that every braided monoidal category arises as $\End(I)$ for a weak unit $I$ in an otherwise completely strict monoidal 2-category. This implies a version of Simpson's weak-unit conjecture in dimension 3, namely that one-object 3-groupoids that are strict in all respects, except that the object has only weak identity arrows, can model all connected, simply connected homotopy 3-types. The proof has a clear intuitive content and relies on a geometrical argument with string diagrams and configuration spaces.

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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