Timeline for Infinite loop space structure of $BU^+$
Current License: CC BY-SA 4.0
6 events
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| Jun 12, 2018 at 16:37 | history | edited | Neil Strickland | CC BY-SA 4.0 |
added 1520 characters in body
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| Apr 17, 2012 at 19:56 | comment | added | berl13 | Thank you, for making this precise. The proof of Neil Strickland works of course in any case. | |
| Apr 17, 2012 at 15:30 | history | edited | Neil Strickland | CC BY-SA 3.0 |
Minor corrections
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| Apr 17, 2012 at 15:28 | comment | added | Neil Strickland | @Charles: perhaps. Then of course the correct statement is that $\mathbb{Z}\times BU$ is the group completion of $\coprod_nBU(n)$. If, as in the question, we take the colimit rather than the coproduct of the spaces $BU(n)$, we get $BU$, which is already group-complete. | |
| Apr 17, 2012 at 15:22 | comment | added | Charles Rezk | I suppose the questioner intends "Quillen's plus construction" in the sense of "group completion", rather than the correct sense of "construction that kills a perfect subgroup of the fundamental group without changing the homology". | |
| Apr 17, 2012 at 14:43 | history | answered | Neil Strickland | CC BY-SA 3.0 |