A vector is a linear algebra concept which correlates to an arrow or point in the plane. A variable that refers to a vector is often drawn with an arrow on top, as shown below. The arrow can either be a full arrow as or as a partial arrow (harpoon) as .
The components of a vector a denoted in various ways. This website uses angle brackets when writing the components of a vector in a horizontal layout.
Parentheses are used as well.
The unit vector notation is also used both with and without hats on the letters.
Finally, the components are also commonly written in a vertical notation.
The components of a vector are expressions that are represented with variables.
The components are also commonly references using the variable of the vector and a subscript number indicating the component position.