Timeline for Weak closure of subsets of the unitary sphere of a Banach space
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 26, 2018 at 12:15 | vote | accept | Tomás | ||
| Dec 22, 2018 at 17:54 | answer | added | Dirk Werner | timeline score: 5 | |
| Dec 19, 2018 at 17:54 | answer | added | Mikhail Ostrovskii | timeline score: 3 | |
| Dec 19, 2018 at 10:27 | history | edited | Tomás | CC BY-SA 4.0 |
I wrote a more detailed proof in the particular case where $X$ is finite dimensional.
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| Dec 16, 2018 at 21:10 | comment | added | Tomás | @DirkWerner, I can prove it only when $X$ is finite dimensional. A compactness argument do the work. No idea on how to tackle the infinite dimensional case. | |
| Dec 11, 2018 at 10:10 | comment | added | Tomás | In fact, in my proof here I were able to find $\delta>0$ in such a way that $z=-\delta x_0$ worked. But now I see that there is a gap here. Let me try to fix it. | |
| Dec 10, 2018 at 22:22 | comment | added | Dirk Werner | Could you explain how to get such a $z$ from just strict convexity? | |
| Dec 10, 2018 at 17:19 | history | asked | Tomás | CC BY-SA 4.0 |