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• CommentRowNumber1.
• CommentAuthorUrs
• CommentTimeDec 21st 2020

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

• CommentRowNumber2.
• CommentAuthorUrs
• CommentTimeDec 21st 2020
• (edited Dec 21st 2020)

according to Hopkins’ talk at Atiyah’s 80th birthday (slide 8, 9:45) 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?

• CommentRowNumber3.
• CommentAuthorUrs
• CommentTimeFeb 4th 2021

expanded and rearranged the list of historical references and the historical commentary around it

• CommentRowNumber4.
• CommentAuthorUrs
• CommentTimeFeb 26th 2021

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.