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added pointer to:
added pointer to:
added pointer to the original
following:
and cross-linked with Eilenberg-Zilber map
I have expanded (here) the section on examples a tad, making more explicit the form of the non-degenerate simplices in for general .
In the course of this I have worked a bit on the outline of the entry. I have tried to disentangle general discussion of products of simplicial sets in a first section, from discussion of non-degenerate cells in a second session. I have also turned some really small subsections into numbered remarks, instead. There is still more one could do along these lines, but I’ll leave it as is for now.
Yes, thanks!!
I’m seeing a lot of broken image links from presheaf.com which seems to be down right now.
I can find no notice that Vlad Patryshev has abandoned that site and since he is active on twitter I presume it is only a temporary outage.
https://github.com/vpatryshev/presheaf
All of those images need to be locally rendered, which can be done now.
EDIT: fixed presheaf.com link
Tim, these images are from your original version of the entry, aren’t they?
I did a lot of cleaning up here (or I tried), but I left untouched, for the moment, your material in what is now Section 4 and Section 5, which is where the broken images reside.
I have not used presheaf.com as far as I can recall. If I have time, I will look back to see when they were added and to try to see what they were intended to be. The problem would seem to be a tikzcddiagram the gives an error message. I do not use tikzcd at present and would not have used it for that diagram. I still use xypic.
I checked back, and the original diagram was done in xypic but using codecogs so someone replaced it.
I have replaced the faulty diagram with one produced on xypic. (The old one was I think a copy of the one that was given above it.) I am not sure how to alter the spacing which is a bit too expansive.
BTW the editing process is calling presheaf.com and seems unable to connect or to terminate.
Coming back to this entry, I have merged the takeaway message of the previously verbose explanation of the shuffle-perspective into the section “Characterization” (here, starting with adding shuffle labels to the big example tikzcd
-diagram).
In doing so I spotted that the last proposition of this section had been wrong all along, and I have fixed it. I believe. Have to run now, though, will polish this up later.
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