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• CommentRowNumber1.
• CommentAuthorJohn Baez
• CommentTimeJun 20th 2018

I added a clearer “The idea” section for Adams operation, and changed the word “functorial” to “natural” in a number of places, because while various sources do say the Adams operations are functorial, they must really be natural transformations from the functor $K: Top \to AbGp$ to itself.

• CommentRowNumber2.
• CommentAuthorUrs
• CommentTimeSep 26th 2018

• CommentRowNumber3.
• CommentAuthorUrs
• CommentTimeSep 2nd 2020

and to the review

• Marcelo Aguilar, Samuel Gitler, Carlos Prieto, Section 10 of: Algebraic topology from a homotopical viewpoint, Springer (2002)
• CommentRowNumber4.
• CommentAuthorUrs
• CommentTimeNov 29th 2020

added statement of the compatibility of the Adams operations with the Chern character (here).

Will also give this its own page Adams operations compatible with the Chern character, for ease of cross-linking and referencing.

• CommentRowNumber5.
• CommentAuthorUrs
• CommentTimeJan 5th 2021

added brief statement (here) of the action of the Adams operations over $2n$-spheres (without the proof, but with a pointer to a proof)

• CommentRowNumber6.
• CommentAuthorUrs
• CommentTimeJan 7th 2021

have added brief statement (here) of the compatibility with complexification