Timeline for U(1) vs. BZ and representations of 2-groups
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 11, 2013 at 20:09 | vote | accept | Ryan Thorngren | ||
| Aug 7, 2013 at 7:42 | answer | added | Urs Schreiber | timeline score: 3 | |
| Aug 7, 2013 at 7:11 | comment | added | Ryan Thorngren | That seems to me just to explain why I called $B\mathbb{Z}$ the same thing as $\mathbb{Z} \to 1$. In this special case, there is the strangeness that $B\mathbb{Z}$ is naturally a group as well as a 2-group. I want to know the relationship between these structures. | |
| Aug 7, 2013 at 6:57 | comment | added | S. Carnahan♦ | Is "Dold-Kan correspondence" a reasonable answer to your first question? A complex with an abelian group $A$ in degree $n$ and zero elsewhere corresponds to an Eilenberg-MacLane simplicial group $K(A,n)$. | |
| Aug 7, 2013 at 6:39 | history | edited | Ryan Thorngren | CC BY-SA 3.0 |
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| Aug 7, 2013 at 5:59 | history | asked | Ryan Thorngren | CC BY-SA 3.0 |