phdicmc:junho22
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Prazo 30 de junho
1. Seja $A \in SL(3, \mathbb{Z}),$ matriz com entradas inteiras e determinante um e $B \in SL(3, \math bb{Z})$ tal que $AB = BA.$ Suponhamos que $B$ possua algum autovalor com norma um, então mostre que $B=Id.$
2. Seja $A$ uma matriz com entradas reais e inversível. Demonstre que
$n! det(A) = \begin{equation*} det \begin{pmatrix} tr(A) & 1 & 0 & \cdots & \cdots & 0 \\ tr(A^2) & tr(A) & 2 & 0 & \cdots & 0 \\ tr(A^3) & tr(A^2) & tr(A) & 3 & &\vdots \\ \vdots & & & & &n-1\\ tr(A^n) & tr(A^{n-1}) & tr(A^{n-2}) & \cdots& \cdots & tr(A) \end{pmatrix} \end{equation*}$
phdicmc/junho22.1654169457.txt.gz · Last modified: 2022/06/02 08:30 by 127.0.0.1