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.
    • CommentAuthorUrs
    • CommentTimeOct 14th 2009

    I filled in content at n-truncated object of an (infinity,1)-category.

    to go with my discussion with David Roberts. I had planned to go further and also write the entry on Postnikov twoers, but got distracted all day.

    Apart from that I just added this link to Higher Topos Theory and did some editing there, added a table of contents, expanded the floating toc.

    • CommentRowNumber2.
    • CommentAuthorUrs
    • CommentTimeOct 14th 2009

    To David:

    I am on the train now, offline. Will try to write the corresponding entry on n-connected objects in an (oo,1)-category/topos, from Lurie's section 6 or-what-is-it.

    I am hoping we can use that then to say precisely what "Whitehead tower in Lie oo-groupoids" is.

    • CommentRowNumber3.
    • CommentAuthorUrs
    • CommentTimeMar 24th 2010

    tried to polish the entry n-truncated object of an (infinity,1)-category a bit. In particular I tried to work out better (and correctly) how n-truncation relates to categorical homotopy groups.

    • CommentRowNumber4.
    • CommentAuthorUrs
    • CommentTimeMar 25th 2010
    • (edited Mar 25th 2010)
    • CommentRowNumber5.
    • CommentAuthorUrs
    • CommentTimeMay 27th 2010
    • (edited May 27th 2010)

    added a bit more to the Properties section

    • CommentRowNumber6.
    • CommentAuthorUrs
    • CommentTimeDec 1st 2011
    • (edited Dec 1st 2011)

    added Examples

    Lots of room to polish/expand this further, but I need to run now.

    • CommentRowNumber7.
    • CommentAuthorTobyBartels
    • CommentTimeDec 4th 2011

    @ Urs #4:

    n-truncated object in an (infinity,1)-category

    This doesn’t seem to exist!

    • CommentRowNumber8.
    • CommentAuthorTobyBartels
    • CommentTimeDec 4th 2011

    I found it: n-truncated object of an (infinity,1)-category. Now there is a redirect.

    • CommentRowNumber9.
    • CommentAuthorUrs
    • CommentTimeDec 5th 2011

    Thanks.