Timeline for Question on Hessian of a function (probability question)
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
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| Feb 16, 2018 at 21:50 | vote | accept | CommunityBot | ||
| Feb 16, 2018 at 8:47 | comment | added | RaphaelB4 | (a=4*3=12.) Yes, with positive probabily there exists $\lambda<0$, this particular example don't work otherwise. Insteed of $\|x\|^4$, one could have also taken $f(x)=F(\| x \|)$, with $F$ has a surjective seconde derivative. | |
| Feb 15, 2018 at 21:42 | comment | added | lcv | What is $a$? (this comment was otherwise too short) | |
| Feb 15, 2018 at 17:59 | comment | added | user31317 | Hi, what I don't understand is that you assume $\lambda, \alpha$ have opposite signs with positive probability? $t$ is a real so $\frac{-\lambda}{\alpha ||v||^2}>0$. | |
| Feb 15, 2018 at 16:12 | history | edited | RaphaelB4 | CC BY-SA 3.0 |
added 100 characters in body
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| Feb 15, 2018 at 16:02 | history | edited | RaphaelB4 | CC BY-SA 3.0 |
added 100 characters in body
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| Feb 12, 2018 at 8:37 | history | answered | RaphaelB4 | CC BY-SA 3.0 |