Timeline for non proper intersection
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 1, 2012 at 12:14 | comment | added | Karl Schwede | In fact, if $X$ and $Y$ are sufficiently transverse and $\dim W = 0$, then $W$ is always reduced and so always a smooth point. | |
| Oct 30, 2012 at 5:12 | comment | added | Sándor Kovács | To have less trivial examples, you can even intersect linear spaces to have non-proper intersections, but the intersection will still be linear and hence non-singular. | |
| Oct 30, 2012 at 3:19 | comment | added | Sasha | Of course not. For example, you can take $X = Y$ to be a point. Then $W$ is also a point. | |
| Oct 30, 2012 at 3:06 | history | asked | prochet | CC BY-SA 3.0 |