Timeline for Analytic vs. formal vs. étale singularities
Current License: CC BY-SA 2.5
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 29, 2011 at 18:30 | comment | added | Ravi Vakil | They are non-isomorphic even at the formal level --- look at m^4/m^5. The quartic form gives you the cross-ratio (well, essentially) that Vivek mentioned. | |
| Jan 11, 2011 at 16:42 | comment | added | Zsolt Patakfalvi | I am not sure I understand this answer perfectly. Are they non-isomorphic analytically locally at the point of intersection? What about formal isomorphism at the same point? | |
| Jan 10, 2011 at 7:15 | comment | added | Sándor Kovács | I think Zsolt meant "locally isomorphic". | |
| Jan 9, 2011 at 19:02 | history | answered | Vivek Shende | CC BY-SA 2.5 |