Timeline for Determinant of Jacobian and directional derivatives
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 1, 2018 at 9:44 | comment | added | Peter Michor | If (and, locally, only if) $f$ is the gradient of a function $g$, then the Jacobian of $f$ equals the Hessian of $g$ and is thus symmetric. | |
| Jan 31, 2018 at 12:22 | comment | added | gerw | Not every Jacobian matrix is symmetric. Consider $f(x) = (x_2, 0)$. | |
| Jan 31, 2018 at 10:35 | review | First posts | |||
| Jan 31, 2018 at 10:55 | |||||
| Jan 31, 2018 at 10:31 | history | answered | Leven | CC BY-SA 3.0 |