Timeline for What are the matrices preserving the $\ell^1$-norm?
Current License: CC BY-SA 4.0
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| Apr 5, 2022 at 10:23 | comment | added | Hans | This seems to be a sketch of an interesting proof. Would you please write out the details? | |
| Nov 12, 2018 at 12:19 | history | answered | Ilya Bogdanov | CC BY-SA 4.0 |