Not signed in (Sign In)

Start a new discussion

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 bundle bundles calculus 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 finite foundations functional-analysis functor galois-theory gauge-theory gebra geometric-quantization geometry graph graphs gravity 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 homology homotopy homotopy-theory homotopy-type-theory index-theory infinity integration integration-theory itex k-theory lie-theory limits linear linear-algebra locale localization logic mathematics measure measure-theory modal modal-logic model model-category-theory monads monoidal monoidal-category-theory morphism motives motivic-cohomology nlab noncommutative noncommutative-geometry number-theory of operads operator operator-algebra order-theory pages pasting philosophy physics planar 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 simplicial space spin-geometry stable-homotopy-theory 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.
    • CommentAuthorTim_Porter
    • CommentTimeMar 31st 2014

    An ‘anonymous coward’ has made quite substantial changes to Geometric nerve of a bicategory, which do not seem to me to be quite fair to Jack Duskin’s contribution. Ross Street makes it clear that Jack and he worked together on the start of the orientals project. Orientals are not mentioned in the entry except for the referenced paper. Also the term geometric nerve is the term used by Duskin. If the person who has changed things is concerned about precedence of papers then they should have mentioned Boardman and Vogt, and Cordier, who both provided insights that led to the definition. What do others of you think?

    • CommentRowNumber2.
    • CommentAuthorUrs
    • CommentTimeMar 31st 2014
    • (edited Mar 31st 2014)

    Looking at the edit changes, this is indeed a somewhat agressive edit.

    It’s been a while since I looked into this. Maybe it’s actually justified on some objective grounds, I don’t know. On the other hand the term “Duskin nerve” is absolutely standard, and just removing mentioning of this seems wrong even if (which I don’t know) the idea is not fully originally due to Duskin.

    Hopefully somebody with a spare five minutes for this looks into it and edits the entry a bit to alleviate the edits by that Anonymous.

    • CommentRowNumber3.
    • CommentAuthorTim_Porter
    • CommentTimeMar 31st 2014

    Urs, your reaction reflects mine. I will do some minor edits to it and then see how it looks.

    • CommentRowNumber4.
    • CommentAuthorTim_Porter
    • CommentTimeMar 31st 2014
    • (edited Mar 31st 2014)

    Actually I do not think the description is correct! The canonical embedding of CatCat into BicatBicat is not the one that works here as that gives that each hom-category in the resulting bicategory will be discrete or am I mixing things up. (Edit: I now see the point, but feel that the entry needs some ’tender loving care’ as I did not initially ’twig’ as to how the NLax bit came in!)

    • CommentRowNumber5.
    • CommentAuthorTim_Porter
    • CommentTimeApr 2nd 2014

    I renamed this entry so as to conform with the lower case initial letter convention.

    • CommentRowNumber6.
    • CommentAuthorDmitri Pavlov
    • CommentTimeMar 3rd 2020

    Cleaned up redirects.

    diff, v13, current

Add your comments
  • Please log in or leave your comment as a "guest post". If commenting as a "guest", please include your name in the message as a courtesy. Note: only certain categories allow guest posts.
  • To produce a hyperlink to an nLab entry, simply put double square brackets around its name, e.g. [[category]]. To use (La)TeX mathematics in your post, make sure Markdown+Itex is selected below and put your mathematics between dollar signs as usual. Only a subset of the usual TeX math commands are accepted: see here for a list.

  • (Help)