Talk:Appendix C - Vectors and Linear Algebra

I think that perhaps one more example of tensor multiplication with 3X3 matrices would be illuminating and helpful. I just wanted to make that suggestion, Russ.

In Section 4, More Dirac Notation, there is an error in the statement: The inner product $\left\vert e_{k}\right\rangle \left\langle j\right\vert \,\!$ can be interpreted as the projection of one vector onto another. This is not an inner product but rather an outer product. Steven