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).
  1. typo list: - closed $ for page rendering about 60% through file - invalid mathcal(G)


    diff, v32, current

    • CommentRowNumber2.
    • CommentAuthorUrs
    • CommentTimeApr 9th 2019


    • CommentRowNumber3.
    • CommentAuthormaxsnew
    • CommentTimeApr 9th 2019

    fund group of the circle is the integers, not naturals. Also a typo

    diff, v33, current

    • CommentRowNumber4.
    • CommentAuthorherminie
    • CommentTimeJun 6th 2020
    In the Definition 1.2. (homotopy), the link to the example does not work properly:

    It could go for instance to the example 2.19 here:

    or to the examples here:
    • CommentRowNumber5.
    • CommentAuthorUrs
    • CommentTimeJun 6th 2020
    • (edited Sep 13th 2021)

    Thanks for the alert!

    The word “Binary” was missing in the anchor, it should have been

      [this example](Introduction+to+Topology+--+1#BinaryProductTopologicalSpace)

    Fixed now. Thanks.

  2. fix typo

    julian rohrhuber

    diff, v45, current

  3. Fixed typo.


    diff, v49, current

  4. Added escaping of curly brackets for {0} x X in left homotopy diagram to be consistent with {1} x X.


    diff, v49, current

  5. Fixed a lot of typos.


    diff, v50, current

    • CommentRowNumber10.
    • CommentAuthorUrs
    • CommentTimeMay 12th 2023

    cross-linked with skeletal groupoid

    diff, v53, current

    • CommentRowNumber11.
    • CommentAuthorUrs
    • CommentTimeJun 3rd 2023

    below the statement that every groupoid is equivalent to a skeleton I have added (here) the remark that equivalently every groupoid is isomorphic to a quasi-skeleton (a copoduct of delooping groupoids times codiscrete groupoids).

    diff, v54, current