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• CommentRowNumber1.
• CommentAuthorUrs
• CommentTimeFeb 18th 2021

added a brief section (here) on the original “Conner-Floyd orientation”

$\array{ M SU &\longrightarrow& K \mathrm{O} \\ \big\downarrow && \big\downarrow \\ M \mathrm{U} &\longrightarrow& K \mathrm{U} }$
• CommentRowNumber2.
• CommentAuthorGuest
• CommentTime1 day ago
I find the statement "Of course KU is also a complex oriented cohomology theory and as such canonically comes with an E∞-map MU→KU" at best misleading. What is the author trying to get at? - Nat
• CommentRowNumber3.
• CommentAuthorUrs
• CommentTime1 day ago

Thanks for catching. I have replaced (here) the “$E_\infty$-” by “homotop-commutative”.