Mathematics – Category Theory
Scientific paper
2006-04-19
Categories in Algebra, Geometry and Mathematical Physics, volume 431, Contemporary Mathematics, 2007
Mathematics
Category Theory
27 pages
Scientific paper
This paper continues the development of a simplicial theory of weak omega-categories, by studying categories which are enriched in weak complicial sets. These complicial Gray-categories generalise both the Kan complex enriched categories of homotopy theory and the Gray-categories of weak 3-category theory. We derive a simplicial nerve construction, which is closely related to Cordier and Porter's homotopy coherent nerve, and show that this faithfully represents complicial Gray-categories as weak complicial sets. The category of weak complicial sets may itself be canonically enriched to a complicial Gray-category whose homsets are higher generalisations of the bicategory of homomorphisms, strong transformations and modifications. By applying our nerve construction to this structure, we demonstrate that the totality of all (small) weak complicial sets and their structural morphisms at higher dimensions form a richly structured (large) weak complicial set.
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