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arXiv 2007.14505math.CTmath.AT
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弱高阶范畴中的图集与重写

Diagrammatic sets and rewriting in weak higher categories

Amar Hadzihasanovic

摘要:

我们重新Kapranov和Voevodsky的想法的空间建模的组合粘贴图,现在作为一个框架,更高的维度重写和基础模型的弱欧米茄类别。在第一部分中,我们详细阐述了斯坦纳的有向复形理论作为组合的基础。我们个性化方便类的有向复合物和发展理论的图形集相对于这样一个类。我们研究了一个概念的等价内部的一个图解集,并挑选出的模型弱欧米茄范畴的那些图解集的每一个组成图是由一个等价连接到一个单一的细胞。然后,我们定义了一个半严格的模型,提供代数复合材料和研究嵌入到这个模型中的严格欧米茄类别。最后,我们证明了一个版本的同伦假设的无穷广群在弱模型中,并表现出一个具体的错误,证明Kapranov和Voevodsky,以前被间接反驳。

英文摘要:

We revisit Kapranov and Voevodsky's idea of spaces modelled on combinatorial pasting diagrams, now as a framework for higher-dimensional rewriting and the basis of a model of weak omega-categories. In the first part, we elaborate on Steiner's theory of directed complexes as a combinatorial foundation. We individuate convenient classes of directed complexes and develop the theory of diagrammatic sets relative to one such class. We study a notion of equivalence internal to a diagrammatic set, and single out as models of weak omega-categories those diagrammatic sets whose every composable diagram is connected by an equivalence to a single cell. We then define a semistrict model providing algebraic composites and study the embedding of strict omega-categories into this model. Finally, we prove a version of the homotopy hypothesis for the infinity-groupoids in the weak model, and exhibit a specific mistake in a proof by Kapranov and Voevodsky that had previously been refuted indirectly.

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