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Feb 22, 2021 at 19:23 answer added Tim Campion timeline score: 2
Mar 2, 2020 at 4:24 answer added Simon Henry timeline score: 5
Mar 2, 2020 at 4:22 comment added Harry Gindi One final comment, I think you could prove (with a lot of combinatorial work) the statement for 2-polygraphs using some of the recent work by Alex Campbell on (∞,2)-categories. I think (∞,n) is probably out of reach, however.
Mar 2, 2020 at 4:05 comment added Harry Gindi The reason why this is highly problematic even for Steiner's diagrams is that cells are glued into cells freely generated in a lower dimension, then you have to generate more cells, then glue again, etc., and things get really crazy when you have to glue in cells along whiskerings.
Mar 2, 2020 at 3:55 comment added Harry Gindi I'm also interested in an answer to this question, but I think it's wide open. I tried working it out at one point, but I didn't get anything super nice. Free strict ω-categories on globular sets do work, but this is not enough to get loop-free Steiner complexes. I suspect that the answer might be free strict ω-categories on a polygraph (which does include Steiner complexes), but things get really hairy really fast. You would have to show levelwise that each free n-category on the n-1-polygraph can be constructed by gluing in higher dimensional analogues of horns.
Mar 2, 2020 at 2:09 history edited Tim Campion CC BY-SA 4.0
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Mar 2, 2020 at 2:01 history edited Tim Campion CC BY-SA 4.0
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Mar 2, 2020 at 1:56 history asked Tim Campion CC BY-SA 4.0