Not signed in

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

• Username
• Password
• Remember me

• Sign in using OpenID
• Remember me

• Forgot your password?
• Apply for membership

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 internal-categories k-theory lie-theory limits linear linear-algebra locale localization logic mathematics measure 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 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

1. • CommentRowNumber1.
   • CommentAuthorDavid_Corfield
   • CommentTimeSep 10th 2021
   • PermaLink
   Author: David_Corfield
   Format: MarkdownItexA stub to record findings from wondering whether such a thing exists. <a href="https://ncatlab.org/nlab/revision/2-periodic+sphere+spectrum/1">v1</a>, <a href="https://ncatlab.org/nlab/show/2-periodic+sphere+spectrum">current</a>

   A stub to record findings from wondering whether such a thing exists.

   v1, current

2. • CommentRowNumber2.
   • CommentAuthorUrs
   • CommentTimeSep 10th 2021
   • PermaLink
   Author: Urs
   Format: MarkdownItexThanks! Just to say that the pdf links doesn't work. (Probably easy to fix, but I have to run now.)

   Thanks! Just to say that the pdf links doesn’t work.

   (Probably easy to fix, but I have to run now.)

3. • CommentRowNumber3.
   • CommentAuthorDavid_Corfield
   • CommentTimeSep 10th 2021
   • PermaLink
   Author: David_Corfield
   Format: MarkdownItexA little more detail. <a href="https://ncatlab.org/nlab/revision/2-periodic+sphere+spectrum/1">v1</a>, <a href="https://ncatlab.org/nlab/show/2-periodic+sphere+spectrum">current</a>

   A little more detail.

   v1, current

4. • CommentRowNumber4.
   • CommentAuthorDavid_Corfield
   • CommentTimeSep 10th 2021
   • PermaLink
   Author: David_Corfield
   Format: MarkdownItexFixed the pdf link now.

   Fixed the pdf link now.

5. • CommentRowNumber5.
   • CommentAuthorUrs
   • CommentTimeSep 10th 2021
   • PermaLink
   Author: Urs
   Format: MarkdownItexmade some minor edits <a href="https://ncatlab.org/nlab/revision/diff/2-periodic+sphere+spectrum/2">diff</a>, <a href="https://ncatlab.org/nlab/revision/2-periodic+sphere+spectrum/2">v2</a>, <a href="https://ncatlab.org/nlab/show/2-periodic+sphere+spectrum">current</a>

   made some minor edits

   diff, v2, current

6. • CommentRowNumber6.
   • CommentAuthorDavid_Corfield
   • CommentTimeSep 10th 2021
   • PermaLink
   Author: David_Corfield
   Format: MarkdownItexAdded that it can't be equipped with an $E_{\infty}$ structure, as mentioned [here](https://mathoverflow.net/a/403274/447). <a href="https://ncatlab.org/nlab/revision/diff/2-periodic+sphere+spectrum/3">diff</a>, <a href="https://ncatlab.org/nlab/revision/2-periodic+sphere+spectrum/3">v3</a>, <a href="https://ncatlab.org/nlab/show/2-periodic+sphere+spectrum">current</a>

   Added that it can’t be equipped with an $E_{\infty}$ structure, as mentioned here.

   diff, v3, current

7. • CommentRowNumber7.
   • CommentAuthorDavid_Corfield
   • CommentTimeSep 10th 2021
   • PermaLink
   Author: David_Corfield
   Format: MarkdownItexThere's Charles Rezk saying so over [here](https://nforum.ncatlab.org/discussion/7643/spectral-symmetric-algebra/?Focus=61755#Comment_61755).

   There’s Charles Rezk saying so over here.