Timeline for A Generalization of Hadamard?
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 5, 2011 at 21:08 | comment | added | André Henriques | The singular locus (in the target $\mathbb R^2$) of this map is parametrized by the curve $x \mapsto (x^3-x,x)$. It is a nodal cubic. That nodal cubic splits the plane into three regions: two unbounded and one bouded. A point in the interior of the bounded region has no preimage. A point in the interior of the region adjacent to the bounded one has two preimages. A point in the interior of the third region has four preimages. | |
| May 5, 2011 at 19:14 | comment | added | dick lipton | Can you tell what it is globally? Is it k to 1 for some k? | |
| May 4, 2011 at 23:31 | history | answered | André Henriques | CC BY-SA 3.0 |