Timeline for On Polynomial Characterization of Projection area of semidefinite matrices
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
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| Jul 23, 2017 at 8:25 | comment | added | Dima Pasechnik | Right, indeed, in arxiv.org/pdf/0812.1624.pdf the duality I outlined is developed for $m=2$. (My description is incomplete, as at some point one has to take the convex closure of the dual variety). I do not know how much of it can be carried over to the case $m>2$, but I presume at least the general setup can. | |
| Jul 22, 2017 at 22:00 | comment | added | gondolf | That is usually called nemerical range for $m=2$. | |
| Jul 21, 2017 at 15:15 | comment | added | Dima Pasechnik | I suppose that it's not really known. It will be instructive to start with the first non-trivial case, $m=2$. | |
| Jul 21, 2017 at 0:07 | comment | added | gondolf | Thanks! I am particular interested in the polynomial characterization of $S$ with $m=4$. Is there good way to understand it? | |
| Jul 20, 2017 at 12:04 | history | answered | Dima Pasechnik | CC BY-SA 3.0 |