Traditionally, unit vectors are represented with a “hat” over them instead of an arrow to denote their unit-vectorness. (some texts use i and j to represent the x and y unit vectors).

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 ...

Expressions are obtained for the resultant of n vectors whose directions are completely random in s dimensions, but for each of which the distribution of the scalar square is given. This is most ...