Timeline for What is the projective dimension of the ring $\mathbb{Z}_l[T,T^{-1}]$ ? l is a prime number
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
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| May 1, 2011 at 15:11 | comment | added | Steven Landsburg | Heer: I wasn't trying to remind you of anything; I was asking a question. | |
| May 1, 2011 at 14:58 | history | edited | Heer | CC BY-SA 3.0 |
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| May 1, 2011 at 14:57 | comment | added | Heer | @Steven: Thanks for reminding me the ambiguity about proj. dim. | |
| May 1, 2011 at 14:55 | vote | accept | Heer | ||
| May 1, 2011 at 4:11 | comment | added | Mariano Suárez-Álvarez | @Greg: $\mathbb Z_l$ is a principal ideal domain, so its global dimension is $1$. | |
| May 1, 2011 at 4:04 | comment | added | Greg Muller | Don't forget the words 'continuous' and 'open' should be inserted appropriately. As a crude ring, $\mathbb{Z}_l$ is infinitely-generated and almost certainly has infinite projective dimension, but there should be no earthly reason you want to forget the topology. | |
| May 1, 2011 at 3:00 | answer | added | Mariano Suárez-Álvarez | timeline score: 10 | |
| May 1, 2011 at 1:42 | comment | added | Steven Landsburg | What is the difference between the projective dimension of A and the projective dimension of the category of A-modules? | |
| May 1, 2011 at 0:02 | history | asked | Heer | CC BY-SA 3.0 |