values: Vector,
https://en.wikipedia.org/wiki/Simplex_category Thinnings are also the morphisms in the simplex category. Simplicial sets are a way of organizing face-edge that use this category as an indexing structure. Is it surprising that de Bruijn manipulations and describing shapes could share this structure? Maybe. Simplicial sets add in degenerate triangles (like a triangle with only 2 distinct vertices (kind of a “thick” line) or even only 1 distinct vertex (a “thick” point)). These are added in because it makes things cleaner. This degenerayc and tossing stuff away does kind of jive with thinning. Nameless Projections kind of jive with thinning. I dunno. If a triangle is a list of 3 points, the oriented edges are kind of the 2 vertex sublists of that and the vertices are kind of the 1 vertex sublists.
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南方周末：按照你的设想，未来建立生物医药产业的长期产业基金，投资方向应该是什么？
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According to Welsh legend, Prince Madoc is believed to have discovered America in 1170 after setting sail from north Wales, over 300 years before Christopher Columbus arrived.，更多细节参见超级工厂
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