Timeline for Spectrum of the sum of two general matrices
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
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| S Jul 6, 2020 at 0:05 | history | bounty ended | CommunityBot | ||
| S Jul 6, 2020 at 0:05 | history | notice removed | CommunityBot | ||
| Jun 28, 2020 at 6:54 | comment | added | Carlo Beenakker | For $2\times 2$ matrices the answer is yes: the only constraint on the eigenvalues of $C$ is a constraint on the sum $\gamma_1+\gamma_2=\alpha_1+\alpha_2+\beta_1+\beta_2$; the product $\gamma_1\gamma_2=(\alpha_1+\beta_1)(\alpha_2+\beta_2)+\Delta$, where $\Delta$ can take any value independently of $\alpha_1,\alpha_2,\beta_1,\beta_2$, so the product is unconstrained. | |
| S Jun 27, 2020 at 22:19 | history | bounty started | Dmitrii Korshunov | ||
| S Jun 27, 2020 at 22:19 | history | notice added | Dmitrii Korshunov | Draw attention | |
| S Jun 25, 2020 at 9:51 | history | suggested | Rodrigo de Azevedo |
Added tag.
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| Jun 25, 2020 at 7:57 | review | Suggested edits | |||
| S Jun 25, 2020 at 9:51 | |||||
| Jun 25, 2020 at 2:35 | answer | added | Michael Renardy | timeline score: 6 | |
| Jun 25, 2020 at 1:56 | history | asked | Dmitrii Korshunov | CC BY-SA 4.0 |