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• CommentRowNumber1.
• CommentAuthorUrs
• CommentTimeMay 2nd 2014

noticed that the Idea-section at ring spectrum didn’t at all address the evident subtlety here. Have expanded now to make this clear.

• CommentRowNumber2.
• CommentAuthorUrs
• CommentTimeJan 11th 2021
• (edited Jan 11th 2021)

• CommentRowNumber3.
• CommentAuthorUrs
• CommentTimeJan 11th 2021

What’s actually the original reference on the concept of (homotopy commutative) rind spectra, if any?

In Adams 74 it says on p. 246, without citation:

G.W. Whitehead introduced the notion of a ring spectrum

Is this meant to acknowledge private communication, or is there a publication by Whitehead that could be cited here?

• CommentRowNumber4.
• CommentAuthorUrs
• CommentTimeJan 11th 2021
• (edited Jan 11th 2021)

Took the liberty of adding this to the list of references for homotopy-commutative ring spectra:

• CommentRowNumber5.
• CommentAuthorUrs
• CommentTimeJan 20th 2021