Timeline for A matrix inequality involving the Hilbert-Schmidt norm
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 10, 2012 at 17:03 | vote | accept | Piero D'Ancona | ||
| Dec 10, 2012 at 16:57 | answer | added | Denis Serre | timeline score: 8 | |
| Dec 10, 2012 at 16:55 | comment | added | Noam D. Elkies | Using coordinates that make $a$ diagonal probably makes this simpler. | |
| Dec 10, 2012 at 16:35 | comment | added | Piero D'Ancona | Not naive at all. I tried with the analytic approach but it did not seem to clarify the problem, indeed $Q(v)$ is a fourth order polynomial in $v$. Before plunging in the computations, I was hoping to find some more synthetic approach using matrix inequalities | |
| Dec 10, 2012 at 16:16 | comment | added | Deane Yang | Very naive question: What happens if you differentiate $Q$ with respect to $v$ and solve for critical points? In principle, you should be able to identify the minimum value of $Q(v)$ in terms of $a$ this way. | |
| Dec 10, 2012 at 16:11 | history | asked | Piero D'Ancona | CC BY-SA 3.0 |