Timeline for Does a non-singular matrix have a large minor with disjoint rows and columns and full rank?
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
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| May 15, 2019 at 12:59 | comment | added | Robert Israel | If $A$ is antisymmetric and nonsingular, $n$ must be even. In the case $n=4$ I can confirm that there must be a good minor of size $2$. | |
| May 15, 2019 at 12:43 | comment | added | H A Helfgott | OK, updated the question. | |
| May 15, 2019 at 12:33 | comment | added | H A Helfgott | @FedericoPoloni Thanks but not really. See above. | |
| May 15, 2019 at 12:21 | comment | added | Federico Poloni | @HAHelfgott Maybe your "true" question is answered by this or this? | |
| May 15, 2019 at 12:15 | comment | added | H A Helfgott | Ah, thanks, that was silly of me. Let me try to see whether I can improve the question. | |
| May 15, 2019 at 12:13 | history | undeleted | Achim Krause | ||
| May 15, 2019 at 12:13 | history | edited | Achim Krause | CC BY-SA 4.0 |
added 58 characters in body
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| May 15, 2019 at 12:06 | history | deleted | Achim Krause | via Vote | |
| May 15, 2019 at 12:06 | history | answered | Achim Krause | CC BY-SA 4.0 |