Timeline for Linear maps preserving positive semidefiniteness
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 3, 2013 at 17:08 | vote | accept | Federico Poloni | ||
| Jan 3, 2013 at 15:19 | comment | added | Federico Poloni | @FelixGoldberg en.wikipedia.org/wiki/… In short, it says that all completely positive linear maps (a stronger condition than preserving positive semidefiniteness) are precisely those in the form $\Phi(X)=\sum W_i X W_i^*$ | |
| Jan 3, 2013 at 14:51 | answer | added | Felix Goldberg | timeline score: 4 | |
| Jan 3, 2013 at 14:45 | comment | added | Felix Goldberg | What's Choi's theorem? | |
| Jan 3, 2013 at 14:35 | history | asked | Federico Poloni | CC BY-SA 3.0 |