Timeline for The Segal Machine constructing spectra and topological $K$-Theory
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
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| Dec 8, 2016 at 16:34 | comment | added | Denis Nardin | If A is a $\Gamma$-space, then $A(1)$ is a pointed space by definition: you have a map $*→A(0)→A(1)$ that gives the pointing (just pick any equivalence $*→A(0)$, it doesn't matter which since $A(0)$ is contractible). | |
| Dec 8, 2016 at 16:19 | comment | added | Max90 | I am just learning about spectra so I might totally be missing the point: The spectrum is given on page 295 as A(1), BA(1), B^2A(1)... .What are the basepoints? | |
| Dec 8, 2016 at 16:11 | comment | added | Denis Nardin | Why do you say that the spectrum is not pointed? It seems pointed to me. What you get is a sequence of pointed spaces $\{X_n\}$ together with equivalences $X_n\xrightarrow{\sim} \Omega X_{n+1}$. | |
| Dec 8, 2016 at 15:27 | review | First posts | |||
| Dec 8, 2016 at 15:30 | |||||
| Dec 8, 2016 at 15:26 | history | asked | Max90 | CC BY-SA 3.0 |