Timeline for Prove or disprove a matrix inequality (positive semidefinite)
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 6, 2021 at 17:07 | vote | accept | Nicole | ||
| May 5, 2021 at 19:08 | history | edited | Fedor Petrov | CC BY-SA 4.0 |
added 925 characters in body
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| May 5, 2021 at 16:09 | comment | added | Nicole | Yes, you are right. While I was trying to say was that this $H$ matrix is fixed with eigenvalues less than $\ell$, and after we have such an $H$ we then try to find constants $\mu$ and $\rho$. | |
| May 5, 2021 at 15:59 | comment | added | Fedor Petrov | Well, but if it is given, why to say that its eigenvalues are bounded? Any finite set is bounded. | |
| May 5, 2021 at 15:43 | comment | added | Nicole | Hi, thanks for your example. But I am sorry that I didn't make it clear. Here H is a fixed symmetric matrix meaning that it is fixed before we choose $\mu$. While in your example, $H$ changes with $\mu$. | |
| May 5, 2021 at 15:29 | history | answered | Fedor Petrov | CC BY-SA 4.0 |