Recently, I was talking about vectors. At that time, I had to stop and recall how I had been representing vectors. Ideally, I should stick with the same notation I used in Basics: Vectors and Vector ...

https://doi.org/10.4169/amer.math.monthly.123.1.82 https://www.jstor.org/stable/10.4169/amer.math.monthly.123.1.82 In this paper a new graphical calculus for ...