Timeline for An extreme point of the ball of the space of compact operators
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 20, 2013 at 19:52 | answer | added | Jan Veselý | timeline score: 8 | |
| Nov 20, 2013 at 19:11 | comment | added | Mateusz Wasilewski | There is also a more general fact that the unit ball of any non-unital C*-algebra does not have any extreme points. | |
| Nov 20, 2013 at 19:04 | comment | added | Bill Johnson | For a Hilbert space there are none for basically the same reason as for $c_0$. Use e.g. the fact that a compact operator maps some orthonormal basis to an orthogonal sequence. | |
| Nov 20, 2013 at 18:58 | review | First posts | |||
| Nov 20, 2013 at 19:03 | |||||
| Nov 20, 2013 at 18:57 | history | edited | Ważki_walor | CC BY-SA 3.0 |
typo
|
| Nov 20, 2013 at 18:52 | history | edited | Ważki_walor | CC BY-SA 3.0 |
typo
|
| Nov 20, 2013 at 18:42 | history | asked | Ważki_walor | CC BY-SA 3.0 |