Not signed in (Sign In)

Not signed in

Want to take part in these discussions? Sign in if you have an account, or apply for one below

  • Sign in using OpenID

Site Tag Cloud

2-category 2-category-theory abelian-categories adjoint algebra algebraic algebraic-geometry algebraic-topology analysis analytic-geometry arithmetic arithmetic-geometry book bundles calculus categorical categories category category-theory chern-weil-theory cohesion cohesive-homotopy-type-theory cohomology colimits combinatorics complex complex-geometry computable-mathematics computer-science constructive cosmology deformation-theory descent diagrams differential differential-cohomology differential-equations differential-geometry digraphs duality elliptic-cohomology enriched fibration foundation foundations functional-analysis functor gauge-theory gebra geometric-quantization geometry graph graphs gravity grothendieck group group-theory harmonic-analysis higher higher-algebra higher-category-theory higher-differential-geometry higher-geometry higher-lie-theory higher-topos-theory homological homological-algebra homotopy homotopy-theory homotopy-type-theory index-theory integration integration-theory k-theory lie-theory limits linear linear-algebra locale localization logic mathematics measure-theory modal modal-logic model model-category-theory monad monads monoidal monoidal-category-theory morphism motives motivic-cohomology nforum nlab noncommutative noncommutative-geometry number-theory of operads operator operator-algebra order-theory pages pasting philosophy physics pro-object probability probability-theory quantization quantum quantum-field quantum-field-theory quantum-mechanics quantum-physics quantum-theory question representation representation-theory riemannian-geometry scheme schemes set set-theory sheaf sheaves simplicial space spin-geometry stable-homotopy-theory stack string string-theory superalgebra supergeometry svg symplectic-geometry synthetic-differential-geometry terminology theory topology topos topos-theory tqft type type-theory universal variational-calculus

Vanilla 1.1.10 is a product of Lussumo. More Information: Documentation, Community Support.

Welcome to nForum
If you want to take part in these discussions either sign in now (if you have an account), apply for one now (if you don't).
    • CommentRowNumber1.
    • CommentAuthorDavid_Corfield
    • CommentTimeDec 10th 2018
    • (edited Dec 10th 2018)
    • CommentRowNumber2.
    • CommentAuthorUrs
    • CommentTimeDec 10th 2018
    • (edited Dec 10th 2018)

    Thanks for the announcement. Just did some last touches on the slides and on the page that hosts them.

    I am lucky that I didn’t oversleep my own talk. I have this vision that one should organize conference meetings in a way that one can always fly westwards: say first a meeting in Paris, then on the US east coast, then on the west coast, then in Japan, etc. Flying west I find enjoyable and in fact relaxing. I suspect my internal biorythm, if I were to live in a cave, would come out at 29 hours or so. Accordingly, flying east tends to knock me out of reality.

    • CommentRowNumber3.
    • CommentAuthorDavid_Corfield
    • CommentTimeDec 10th 2018
    • (edited Dec 10th 2018)

    Did you manage to cover half of that material in 50 minutes?

    Typos

    • 2: Nonperturvative
    • 10: cornformal
    • 24 and succeeding slides: Π sub\Pi_{sub}
    • 28: \nothing
    • 31: Algbd or Algd, you have both.
    • 117: visisible (twice); equivarian [And over succeeding slides]
    • CommentRowNumber4.
    • CommentAuthorUrs
    • CommentTimeDec 10th 2018

    I went through Part I just fine, as intended. You’ll be able to judge for yourself when the video recording comes online.

    But I like to include more background information in the slides than what I actually say in a talk. I am thinking: the talk lasts a few minutes, attended by a few handful; but the slides will stay on the conference webpage forever, visible to everyone. So I ought to prepare the slides not just for the primary live audience, but also for the secondary audience. Maybe I fail, but that’s the idea.

    Thanks for catching typos! Fixing now.

    • CommentRowNumber5.
    • CommentAuthorUrs
    • CommentTimeDec 10th 2018

    Ah, the apparently un-rendered \nothing on slides 28-29 was intentional. I thought this was both: more funny but also more serious than saying “nothing” at this point. But maybe I am getting lost in ideosyncracy here.

    • CommentRowNumber6.
    • CommentAuthorDavid_Corfield
    • CommentTimeDec 10th 2018

    Perhaps that evokes better the image you described once:

    I have this image in my head, to go with this: a computer as in the old times, no graphical user interface. But Coq preinstalled. You switch it on. The screen pitch black, save for the green cursor box blinking in the top left.

    This is the image of the universe before creation. That black screen with nothing on it except that intensional dependent type theory is running in the background. And no input yet: in the Coq-kernel, in the register for “context” it reads:

    empty
    

    as in

    Inductive : empty : Type :=   
    

    and then nothing.

    • CommentRowNumber7.
    • CommentAuthorDavid_Corfield
    • CommentTimeDec 12th 2018

    Has anyone at the conference other than you spoken about what this “new kind of geometry” will look like from the perspective of mathematics (or even philosophy)?

    • CommentRowNumber8.
    • CommentAuthorDavid_Corfield
    • CommentTimeOct 14th 2019

    Slide 68 speaks of lifting beyond the infinitesimal, rational approximation reached at the M-brane top of the brane bouquet. With your conviction now in Hypothesis H, does this increase for you the plausibility of lifting the whole brane bouquet, perhaps by way of the spectral superpoint?

    • CommentRowNumber9.
    • CommentAuthorUrs
    • CommentTimeOct 14th 2019
    • (edited Oct 14th 2019)

    It’s become more plausible yes. But I still have no idea how to lift the bouquet in total beyond super-rational homotopy theory. But also, I haven’t been thinking about it any further, being busy in other sectors of the story.