Timeline for commuting matrices
Current License: CC BY-SA 2.5
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 7, 2011 at 12:30 | comment | added | darij grinberg | "permutation"?? | |
| Jan 7, 2011 at 10:28 | answer | added | Suvrit | timeline score: 4 | |
| Jan 7, 2011 at 9:03 | answer | added | Aaron Meyerowitz | timeline score: 1 | |
| Jan 7, 2011 at 5:04 | answer | added | Bill Thurston | timeline score: 6 | |
| Jan 6, 2011 at 23:01 | comment | added | Wadim Zudilin | The problem isn't well stated. Are $A_1,\dots,A_k$ commuting? What happens if one simply takes $P_j=(1+\delta)A_j$ for a suitable infinitesimal $\delta$? | |
| Jan 6, 2011 at 20:48 | answer | added | Igor Rivin | timeline score: 4 | |
| Jan 6, 2011 at 20:35 | comment | added | Aaron Meyerowitz | @Denis If $A_1$ and $A_2$ are 2 by 2 with constant diagonals, one upper triangular and the other lower, then they span all 2 by 2 matrices. They might be perturbed diagonal matrices. | |
| Jan 6, 2011 at 20:10 | comment | added | Denis Serre | Well, $A_1,\ldots,A_n$ span a commutative sub-algebra. Just take $P_1,\ldots,P_n$ in the same subspace. | |
| Jan 6, 2011 at 20:06 | history | edited | Andrey Rekalo | CC BY-SA 2.5 |
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| Jan 6, 2011 at 20:02 | history | asked | mario | CC BY-SA 2.5 |