Notes_EN

Entries from 2016-08-08 to 1 day

Determinant of ...

Determinant of $r^2\mathbb{1}-3\boldsymbol{r}\otimes\boldsymbol{r}$ \begin{align} \boldsymbol{r}\otimes\boldsymbol{r} =\begin{pmatrix} x^2&xy&xz\\ yx&y^2&yz\\ zx&zy&z^2 \end{pmatrix} \end{align} This matrix has following properties: $\math…