Timeline for A ring such that all projectives are stably free but not all projectives are free?
Current License: CC BY-SA 2.5
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 28, 2010 at 2:09 | vote | accept | Hailong Dao | ||
| Jun 10, 2010 at 4:38 | comment | added | Victor Protsak | Thank you, Hailong! By the way, there is another proof of the theorem of Mohan Kumar and Nori on Swan's homepage, math.uchicago.edu/~swan/MKN.pdf | |
| Jun 10, 2010 at 0:04 | comment | added | Hailong Dao | @Victor: I think Mohan probably refers to this sequence: $G_0(R/xR) \to G_0(R) \to G(R[1/x] \to 0$. One can use this + induction to compute $G_0(R)$. | |
| Jun 9, 2010 at 23:36 | comment | added | Victor Protsak | I was looking at this example (due to Raynaud, if I'm not mistaken), but couldn't figure out how to prove that $K_0=\mathbb{Z}.$ Can you, please, sketch "by localization one easily checks" part? | |
| Jun 9, 2010 at 19:35 | comment | added | Hailong Dao | Wow, hi Mohan! Welcome to MO. | |
| Jun 9, 2010 at 19:34 | history | answered | Mohan | CC BY-SA 2.5 |