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1. • CommentRowNumber1.
   • CommentAuthorUrs
   • CommentTimeDec 21st 2020
   • PermaLink
   Author: Urs
   Format: MarkdownItexstarting something, to go along with _[[first stable homotopy group of spheres]]_ and _[[third stable homotopy group of sphere]]_ -- but for the moment just collecting references <a href="https://ncatlab.org/nlab/revision/second+stable+homotopy+group+of+spheres/1">v1</a>, <a href="https://ncatlab.org/nlab/show/second+stable+homotopy+group+of+spheres">current</a>

   starting something, to go along with first stable homotopy group of spheres and third stable homotopy group of sphere – but for the moment just collecting references

   v1, current

2. • CommentRowNumber2.
   • CommentAuthorUrs
   • CommentTimeDec 21st 2020
   • (edited Dec 21st 2020)
   • PermaLink
   Author: Urs
   Format: MarkdownItexaccording to Hopkins' talk at Atiyah's 80th birthday ([slide 8](https://www.maths.ed.ac.uk/~v1ranick/hopkins.pdf#page=8), [9:45](http://empg.maths.ed.ac.uk/Videos/Atiyah80/Hopkins.mov)) Pontryagin had announced the computation of $\pi_2^s$ at the International Congress of Mathematics of 1930 (with some mistake, but anyway). Is there any trace (e.g. in proceedings) of that 1930 ICM talk?

   according to Hopkins’ talk at Atiyah’s 80th birthday (slide 8, 9:45) Pontryagin had announced the computation of at the International Congress of Mathematics of 1930 (with some mistake, but anyway). Is there any trace (e.g. in proceedings) of that 1930 ICM talk?

3. • CommentRowNumber3.
   • CommentAuthorUrs
   • CommentTimeFeb 4th 2021
   • PermaLink
   Author: Urs
   Format: MarkdownItexexpanded and rearranged the list of historical references and the historical commentary around it <a href="https://ncatlab.org/nlab/revision/diff/second+stable+homotopy+group+of+spheres/5">diff</a>, <a href="https://ncatlab.org/nlab/revision/second+stable+homotopy+group+of+spheres/5">v5</a>, <a href="https://ncatlab.org/nlab/show/second+stable+homotopy+group+of+spheres">current</a>

   expanded and rearranged the list of historical references and the historical commentary around it

   diff, v5, current

4. • CommentRowNumber4.
   • CommentAuthorUrs
   • CommentTimeFeb 26th 2021
   • PermaLink
   Author: Urs
   Format: MarkdownItexre #2: ah, it was ICM 1936 in Oslo, not 1930. Have included the reference now, as [Pontrjagin36](https://ncatlab.org/nlab/show/second+stable+homotopy+group+of+spheres#Pontrjagin36). Also re-arranged the list of references a little, and added pointer to Ravenel's page _[A collection of earlier and more recent papers related to the Arf-Kervaire invariant problem](https://people.math.rochester.edu/faculty/doug/AKpapers.html)_. <a href="https://ncatlab.org/nlab/revision/diff/second+stable+homotopy+group+of+spheres/6">diff</a>, <a href="https://ncatlab.org/nlab/revision/second+stable+homotopy+group+of+spheres/6">v6</a>, <a href="https://ncatlab.org/nlab/show/second+stable+homotopy+group+of+spheres">current</a>

   re #2: ah, it was ICM 1936 in Oslo, not 1930. Have included the reference now, as Pontrjagin36. Also re-arranged the list of references a little, and added pointer to Ravenel’s page A collection of earlier and more recent papers related to the Arf-Kervaire invariant problem.

   diff, v6, current

5. • CommentRowNumber5.
   • CommentAuthorUrs
   • CommentTimeFeb 9th 2022
   • (edited Feb 9th 2022)
   • PermaLink
   Author: Urs
   Format: MarkdownItex[edit: sorry, wrong thread, see instead [here](https://nforum.ncatlab.org/discussion/12074/first-stable-homotopy-group-of-spheres/?Focus=97526#Comment_97526) ]

   [edit: sorry, wrong thread, see instead here ]