Timeline for A potential new norm for matrices and Horn's inequalities
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
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| Jun 18, 2023 at 17:40 | vote | accept | Pedro Poitevin | ||
| Jun 18, 2023 at 2:22 | comment | added | Terry Tao | Actually on closer inspection the gauge condition is obeyed for $p \geq q$. See the answer given below. | |
| Jun 18, 2023 at 2:03 | answer | added | Terry Tao | timeline score: 9 | |
| Jun 17, 2023 at 18:14 | comment | added | Pedro Poitevin | Thank you, @TerryTao. I was led astray by a myriad calculations and have not yet found a counterexample to the triangle inequality. Your explanation and reference have clarified matters for me. Thank you for taking the time. | |
| Jun 17, 2023 at 17:34 | history | edited | Rodrigo de Azevedo | CC BY-SA 4.0 |
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| Jun 17, 2023 at 16:39 | comment | added | Terry Tao | This expression is unitarily invariant, but is not a symmetric gauge function of the singular values, hence is not a norm. See for instance nhigham.com/2021/02/02/what-is-a-unitarily-invariant-norm | |
| Jun 17, 2023 at 16:28 | history | edited | Christian Remling | CC BY-SA 4.0 |
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| S Jun 17, 2023 at 16:07 | review | First questions | |||
| Jun 17, 2023 at 16:38 | |||||
| S Jun 17, 2023 at 16:07 | history | asked | Pedro Poitevin | CC BY-SA 4.0 |