Yes this paper is excellent. Far more comprehensible (to me) than the link at the top of this discussion. I guess it all depends on what you are already familia

Yes this paper is excellent. Far more comprehensible (to me) than the link at the top of this discussion. I guess it all depends on what you are already familiar with. I was familiar with vectors and functions of vectors, and the concept of a linear function. Therefore, "A rank-n tensor T is, by definition, a real-valued, linear function of n vectors." is a much better starting point for me.