Hi
How can we find the self outer product of matrix A?
$\displaystyle A=\begin{pmatrix}1&2&3\\4&5&6\end{pmatrix}$
Thanks
The "outer product" of two n vectors is an n by n matrix and the tensor product (where two n by n tensor produce and "n by n by n by n" tensor) is often called an "outerproduct" so, at a guess, the "outer product" of two matrices written as n by m and j by k arrays is an n by m by j by k array (written in four dimensions, of course!) where the $\displaystyle a_{mnij}$ entry is $\displaystyle A_{ij}B_{jk}$.
That makes the calculation of this "outerproduct" easy but I'm not sure how one would represent that in 2D (on the screen).