Timeline for Group of matrices in which every matrix is similar to unitary
Current License: CC BY-SA 4.0
19 events
when toggle format | what | by | license | comment | |
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May 26, 2023 at 10:19 | comment | added | Dave Benson | Ah! I didn't see @MoisheKohan's response above. Yes, this is essentially the example of Bass. | |
May 26, 2023 at 9:32 | history | edited | Dave Benson | CC BY-SA 4.0 |
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May 26, 2023 at 3:09 | vote | accept | Александр Худяков | ||
May 26, 2023 at 5:59 | |||||
May 25, 2023 at 21:38 | comment | added | Александр Худяков | I can't prove that this group is not bounded (each cyclic subgroup is obviously bounded). But it seems that for general $A$ (when $A$, $A^{-1}$ don't have common eigenvalues) there are not many bases in which A is unitary. | |
May 25, 2023 at 21:32 | comment | added | Александр Худяков | What is the 3-dimensional example? | |
May 25, 2023 at 21:31 | vote | accept | Александр Худяков | ||
May 26, 2023 at 3:09 | |||||
May 25, 2023 at 21:11 | comment | added | Dave Benson | I was originally trying dimension 2, and - surprise, surprise - it didn't work properly. | |
May 25, 2023 at 20:58 | comment | added | Moishe Kohan | You can even lower the dimension to 3 (the example is due to Bass). | |
May 25, 2023 at 20:58 | comment | added | Dave Benson | Sorry about the multiple edits, it took me a while to get the example working properly. I think it should be okay now. | |
May 25, 2023 at 20:56 | history | edited | Dave Benson | CC BY-SA 4.0 |
deleted 1 character in body
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May 25, 2023 at 20:43 | history | undeleted | Dave Benson | ||
May 25, 2023 at 20:42 | history | edited | Dave Benson | CC BY-SA 4.0 |
corrected (hopefully) the example.
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May 25, 2023 at 20:30 | history | deleted | Dave Benson | via Vote | |
May 25, 2023 at 20:25 | vote | accept | Александр Худяков | ||
May 25, 2023 at 20:27 | |||||
May 25, 2023 at 20:24 | history | edited | Dave Benson | CC BY-SA 4.0 |
added "with $|\lambda|=1$.
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May 25, 2023 at 20:19 | history | undeleted | Dave Benson | ||
May 25, 2023 at 20:16 | history | edited | Dave Benson | CC BY-SA 4.0 |
added 205 characters in body
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May 25, 2023 at 20:10 | history | deleted | Dave Benson | via Vote | |
May 25, 2023 at 20:08 | history | answered | Dave Benson | CC BY-SA 4.0 |