Timeline for Nonfree projective module over a regular UFD?
Current License: CC BY-SA 2.5
3 events
| when toggle format | what | by | license | comment | |
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| Feb 5, 2011 at 5:36 | comment | added | Torsten Ekedahl | I think it is factorial: The Picard group of the real projective quadric $x^2-y^2-z^2-t^2$ is generated by hyperplane sections and $x^2-y^2-z^2-1$ is a complement of a hyperplane and thus the whole Picard group is killed off. | |
| Feb 4, 2011 at 20:44 | comment | added | Hugh Thomas | Sorry, since this doesn't answer the question as posed, maybe I should have left it as a comment. | |
| Feb 4, 2011 at 20:38 | history | answered | Hugh Thomas | CC BY-SA 2.5 |