Timeline for Does the image of $f$ contain a positive number?
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 30, 2018 at 9:26 | vote | accept | MSMalekan | ||
| Apr 30, 2018 at 7:56 | comment | added | Pietro Majer | (recall that for any invertible positive operator $L$ one has $\|L^{-1}\|^{-1}=\inf\sigma(L)$) | |
| Apr 30, 2018 at 7:54 | history | edited | Pietro Majer | CC BY-SA 3.0 |
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| Apr 30, 2018 at 7:14 | history | answered | Pietro Majer | CC BY-SA 3.0 |