Timeline for trace of a matrix of finite order
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jul 30, 2012 at 12:52 | vote | accept | kchoi | ||
| Jul 30, 2012 at 12:52 | |||||
| Jul 26, 2012 at 14:57 | comment | added | Qiaochu Yuan | This is not at an appropriate level for MO (see the FAQ). But see math.stackexchange.com. | |
| Jul 26, 2012 at 14:54 | comment | added | Mikael de la Salle | For any $n \times n$ matrices $A$, $B$, the trace of the map $X \in M_n \mapsto A X B \in M_n$ is $Tr(A) Tr(B)$. Here you therefore get $Tr(\phi_A) = Tr(A) Tr(A^{-1}) - 1$. | |
| Jul 26, 2012 at 14:53 | answer | added | Charles Matthews | timeline score: 1 | |
| Jul 26, 2012 at 14:52 | history | edited | kchoi | CC BY-SA 3.0 |
added 1 characters in body; added 42 characters in body
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| Jul 26, 2012 at 14:46 | history | asked | kchoi | CC BY-SA 3.0 |