Timeline for Is there a definition of reduced $E_\infty$ ring?
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| Nov 1, 2020 at 11:00 | answer | added | Achim Krause | timeline score: 9 | |
| Nov 1, 2020 at 2:58 | comment | added | Qiaochu Yuan | What would you want a definition of reduced $E_{\infty}$ ring for? | |
| Oct 31, 2020 at 23:02 | history | edited | W. Zhan | CC BY-SA 4.0 |
added 109 characters in body
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| Oct 31, 2020 at 20:17 | comment | added | Marc Hoyois | In addition, $CAlg^{red}$ is not closed under limits in $CAlg$. For example, any square-zero extension $R\oplus M$ can be obtained as a pullback of $R\to R\oplus\Sigma M\leftarrow R$. | |
| Oct 31, 2020 at 16:34 | comment | added | Harry Gindi | A reduced connective $E_\infty$-ring should be a reduced ordinary ring, if you interpret the higher homotopy as higher-order nilpotents. | |
| Oct 31, 2020 at 16:23 | history | asked | W. Zhan | CC BY-SA 4.0 |