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 finite 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 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.
    • CommentAuthorHarry Gindi
    • CommentTimeJun 11th 2010

    The pages BG and EG should definitely have redirects to classifying space and universal principal G-bundle respectively. I had to “ask an expert” what exactly they meant before I could even search for them. I would add the redirect, but I don’t know how.

    • CommentRowNumber2.
    • CommentAuthorDavidRoberts
    • CommentTimeJun 11th 2010
    • (edited Jun 11th 2010)

    I would be inclined not to add links to symbols like BG and EG. Where do you draw the line at making symbols links to the pages that name them? In good exposition one would say ’…the classifying space BGBG’ or ’…the universal bundle EGBGEG \to BG…’ or ’…the universal GG-space EGEG…’ (EG sometimes isn’t a bundle, but merely a space!) giving the writer a chance to link to a nearby word. And BG (modulo typesetting) is getting to be an overloaded combination. It stands for both the classifying space of a topological group (of which there are several explicit models) and the delooping of a group object, and these are related in subtle ways that need to be kept at the back of your thoughts.

    • CommentRowNumber3.
    • CommentAuthorTobyBartels
    • CommentTimeJun 11th 2010

    My opinions align with David’s here.

    If you really want to do something with BG, then you could list its meanings there. Or redirect it to Notation and list things there.

    But really, it is bad form to link to BG at all. As David said, ’the classifying space G\mathcal{B}G’ is the way to do it. Then there is no need to do anything with BG.

    Although listing its meanings at Notation might still be a good idea. (I know that Eric would approve!)