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Removed by admin.
Began working on a write up of the material presented in #1 at this nForum post. I will use it as well to experiment with introduction of further Tex style commands (the aim is for the page to compile as-is into LaTex), and to work on relevant nLab pages on knot theory (beginning with link diagram earlier today).
added pointer to a reference: Borceux 94, Vol 1, section 4.4
Tried to make some improvements. Added a redirect for Reidemeister’s theorem. Gave a hint of how to prove it. Quite a bit more could be done to improve the page.
At Chevalley-Eilenberg chain complex the link to Chevalley-Eilenberg cochain complex was grey as was the adjacent link. Initially in the first version by Zoran that link was active. I think that the hyphen was being seen as something else. I changed it back but note that Toby in one of the revisions had made a change to the original. Is it - against – or what? I am bemused! (as usual!)
BTW the equation giving the differential was very awkwardly formatted, so I changed the formatting a bit.
Small improvement to introduction.
Removed by admin.
brief category:people entry for the purpose of hyperlinking references (right now: at higher spin gauge theory)
For size reasons I need to split this section off and re-!include it into geometry of physics – categories and toposes. (Hence nothing to be seen here, this is not a stand-alone entry. I am announcing it only since the system is forcing me to do so.)
brief category:people entry for hyperlinking references at 12-dimensional supergravity
brief category:people entry for hyperlinking references at super Riemann surface and Randall-sundrum model
I assume nobody still around here still cares much about Rafael Borowiecki’s entry Timeline of category theory and related mathematics?
I know this entry mostly from when I create new entries: every now and then I think I am creating an entirely un-linked-to new entry, only to see then that the “timeline” is already pointing to it.
For procrastination purposes I just looked at the entry itfelf for the first time in years. While I still have the opinion that I once voiced there, that more important than making it entirely complete is to remove some (few) weird items, I have to admit it has something to it. Would be a fun thing to look at… if there were fewer broken links in grey.
But I notice one thing: for a whole bunch of those grey links we actually do have entries. Only the “timeline” does not follow our entry-naming conventions. For instance it asks for a bunch of capitalized keywords which we do have in lower case. It also asks for “Peter Johnstone (mathematician)”, which we don’t have, while of course we do have “Peter Johnstone”, and so on.
Just in case anyone feels inspired to work on fixing some of these links…
created Jacobi identity
had need to create an entry signs in supergeometry, along the lines of Deligne-Freed’s “Sign manifesto”.
One section of this I copy-and-pasted also to make a new entry super Cartesian space.
at theory under Specific examples I have added a pointer to elementary function artihmetic
(nothing but a pointer, but I gather that pointer deserves to be listed on an entry on theories.)
I gave proof by contradiction a little Idea-section. This came about with writing an Idea-section at classical logic, which we are discussing in another thread here.
I’ve added to the formerly stubby long line.
Incidentally, I thought the one-point compactification of the long line was called the “long circle”, but I don’t see mention of that via google. What’s that thing called?