Timeline for Operator norm versus Hlawka inequality
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
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| Nov 3, 2014 at 12:29 | comment | added | Wlodzimierz Fechner | Some time ago I wrote a paper on functional Hlawka inequality: $$f(x+y) + f(x+z) + f(y+z) \leq f(x+y+z) + f(x) + f(y) + f(z)$$ see link.springer.com/article/10.1007%2Fs00010-012-0178-2 I collected there the some basic facts I found on the inequality (H). The problem was studied by some people in 70's and 80's. And it seems that a characterization of the spaces in wchich (H) is true is not known. | |
| Oct 29, 2014 at 16:28 | answer | added | Guillaume Aubrun | timeline score: 7 | |
| Oct 19, 2014 at 2:05 | comment | added | Suvrit | So the question is whether this inequality holds for arbitrary $2\times 2$ matrices under the operator norm? | |
| Oct 18, 2014 at 6:46 | history | edited | Denis Serre | CC BY-SA 3.0 |
added 75 characters in body
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| Oct 17, 2014 at 13:34 | vote | accept | Denis Serre | ||
| Oct 17, 2014 at 13:33 | answer | added | Mateusz Wasilewski | timeline score: 9 | |
| Oct 17, 2014 at 13:13 | history | asked | Denis Serre | CC BY-SA 3.0 |