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    • I added the definition and several references on higher dimensional knots under knot.

    • brief category:people-entry for hyperlinking references

      v1, current

    • Started this to fulfil links from elsewhere.

      v1, current

    • Thomas Holder has been working on Aufhebung. I have edited the formatting a little (added hyperlinks and more Definition-environments, added another subsection header and some more cross-references, cross-linked with duality of opposites).

    • Started something to fulfil a link

      v1, current

    • Created the page (Idea, Syntax, Example, Typing and References)

      v1, current

    • brief category:people-entry for hyperlinking references

      v1, current

    • entry renamed to fit more systematic naming pattern

      diff, v29, current

    • Fixed a LaTeX typo in Remark 3.12. I’m not an expert so could someone double-check?

      diff, v141, current

    • Did anyone ever write out on the nLab the proof that for X locally compact and Hausdorff, then Map(X,Y) with the compact-open topology is an exponential object? (Many entries mention this, but I don’t find any that gets into details.)

      I have tried to at least add a pointer in the entry to places where the proof is given. There is prop. 1.3.1 in

      • Marcelo Aguilar, Samuel Gitler, Carlos Prieto, sections 1.2, 1.3 of Algebraic topology from a homotopical viewpoint, Springer (2002) (toc pdf)

      but of course there are more canonical references. I also added pointer to

      • Eva Lowen-Colebunders, Günther Richter, An Elementary Approach to Exponential Spaces, Applied Categorical Structures May 2001, Volume 9, Issue 3, pp 303-310 (publisher)
    • Added to derivator the explanation that Denis-Charles Cisinski had posted to the blog.

      Zoran, I have made the material you had here the section "References", as this was mainly pointers to the literature. Please move material that you think you should go into other sections.

    • the entry braid group said what a braid is, but forgot to say what the braid group is; I added in a sentence, right at the beginning (and fixed some other minor things).

    • brief category:people-entry for hyperlinking references

      v1, current

    • This week I am at a workshop in Bristol titled Applying homotopy type theory to physics, funded by James Ladyman’s “Homotopy Type Theory project”. David Corfield is also here. The program does not seem to be available publically, but among the other speakers that the nLab community knows is also Jamie Vicary.

      Myself, I will give a survey talk titled “Modern physics formalized in Modal homotopy type theory” (which maybe should rather have “to be formalized” in the title, depending on how formal you take formal to be). I am preparing expanded notes to go with this talk, which I am keeping at

      This is still a bit rough at some points, but that’s how it goes.

      I currently also have a copy of the core of this material in one section at Science of Logic, replacing the puny previous section on formalization that was there. While it’s not puny anymore, now maybe it’s too long and should be split off. But just for the time being I’ll keep it there.

      If you look at it, you’ll recognize a few points that I tried to discuss here lately, more or less successfully. This here is not meant to force more discussion about this – we may all be happier with leaving it as it is – it’s just to announce edits, in case anyone watching the RecentlyRevised charts is wondering.

    • I have created a page list of mathematics software with links to all the nLab pages I could find about software packages, and put all of those pages in category: software.

    • An anonymous coward put something blank (or possibly some spam that somebody else blanked within half an hour) at Hausdorff dimension, so I put in a stub.

    • added section on Russell’s relation to mysticism based on his essay Mysticism and Logic and the biography of Ray Monk.

    • only removing the latex markers

      Valeria de Paiva

      diff, v7, current

    • gave link to published version of Ashley’s thesis

      diff, v26, current

    • brief category:people-entry for hyperlinking references

      v1, current

    • Page created, but author did not leave any comments.

      v1, current

    • In the category:people-entry “William Lawvere” I have created a subsection “Motivation from foundations of physics” where I want to collect pointers to where and how Lawvere was/is motivated from finding foundations for (classical continuum) physics.

      Explicit evidence for this that I am aware of includes notably the texts Toposes of laws of motion and the introduction to the book Categories in Continuum Physics.

      The Wikipedia entry has this about motivation from physics:

      Lawvere studied continuum mechanics as an undergraduate with Clifford Truesdell. He learned of category theory [...] found it a promising framework for simple rigorous axioms for the physical ideas of Truesdell and Walter Noll. [...] meeting on “Categories in Continuum Physics” in 1982. Clifford Truesdell participated in that meeting, as did several other researchers in the rational foundations of continuum physics and in the synthetic differential geometry which had evolved from the spatial part of Lawvere’s categorical dynamics program). Lawvere continues to work on his 50-year quest for a rigorous flexible base for physical ideas, free of unnecessary analytic complications.

      Question: Can anyone point me to more on this early phase of the story (graduate student is supposed to start to look into continuum mechanics, starts to wonder “What is a vector field, really?, what a differential equation?” and ends up revolutionizing the foundations of differential calculus)?

    • made a bunch of cosmetic edits to formatting and wording (more could be done…)

      diff, v7, current

    • clarified in the first paragraph the presence and role of the ground field/ring

      (prodded by the comment here)

      diff, v17, current

    • brief category:people-entry for hyperlinking references

      v1, current

    • renamed from “geometric fixed points” to “geometric fixed point spectrum”, which is clearly the better/right entry title

      diff, v3, current

    • Changed ’∞-compact’ to ’sigma-compact’.

      This page is a bit weird, because apparently in 2018 or so I had an idea to generalise the notion in the literature, but didn’t explain it enough for me to reconstruct my idea. I think that the real definition should go here, but I will come back to this soon. Possibly some of the classical stuff works here; I’m thinking the source-fibre-wise Haar measure might exist, but maybe not. But not everything will work, since the space of objects not being locally compact is pretty fatal for getting an overall measure.

      diff, v3, current

    • I have added the adjoint modality of EvenOdd on (,).

      This example is from adjoint modality (here). But it was actually a little wrong there. I have fixed it and expanded there and then copied over to here.

      diff, v3, current

    • finally a stub for Segal condition. Just for completeness (and to have a sensible place to put the references about Segal conditions in terms of sheaf conditions).

    • brief category:people-entry for hyperlinking references

      v1, current

    • Began stub for Tambara functor. Neil Strickland’s, Tambara Functors, arXiv:1205.2516 seems to be a good reference.

      Seems like it’s very much to do with pullpush through polynomial functors, if you look around p. 23.

      I would try to say what the idea is, but have to dash.

    • I have added a little bit to supermanifold, mainly the definition as manifolds over superpoints, the statement of the equivalence to the locally-ringed-space definition and references.

    • At Fréchet space I have added to the Idea-section a paragraph motivating the definition via families of seminorms from the example of =limnn. And I touched the description of this example in the main text, now here.