Timeline for Bondal counter example to the Jordan-Holder property in derived categories
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 17, 2013 at 19:28 | comment | added | Sasha | The reason for nonextendability is the fact that the Euler form $\chi(-,-)$ on the orthogonal subcategory $P^\perp$ is skew-symmetric, and so $P^\perp$ does not have exceptional objects. | |
| May 17, 2013 at 16:48 | comment | added | Miguel | I already knew that papper, the thing is that there it explains what Bondal proved, but doesn't give a detailed proof nor a reference | |
| May 15, 2013 at 16:18 | history | answered | Sasha | CC BY-SA 3.0 |