Timeline for Comparison of the absolute value of an operator with its positive parts
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 12, 2017 at 22:07 | vote | accept | Chris Ramsey | ||
| Nov 8, 2017 at 3:35 | answer | added | fedja | timeline score: 8 | |
| Nov 8, 2017 at 1:55 | comment | added | fedja | I'll post the argument a bit later (maybe even today, but not now). References are my weak point: I never remember any :-) However this should be well-known (to people who know it well) | |
| Nov 8, 2017 at 1:38 | comment | added | Chris Ramsey | @fedja Any papers that you can point me to? I really only need to know that it isn't possible for a paper I'm writing. Do you have an argument or source for the fixed finite-dimensional argument? I would be very happy to know this. | |
| Nov 8, 2017 at 1:29 | comment | added | fedja | There are counterexamples but I don't know any trivial one. They all require letting the dimension of the space go to infinity; in any fixed finite dimension the statement is true. | |
| Nov 3, 2017 at 23:04 | comment | added | Chris Ramsey | @YemonChoi That's right. | |
| Nov 3, 2017 at 22:31 | comment | added | Yemon Choi | By "universal", you mean C should not depend on P and Q, right? | |
| Nov 3, 2017 at 16:30 | history | asked | Chris Ramsey | CC BY-SA 3.0 |