# Notation for vectors

by Philip Wood
Tags: notation, vectors
 Sci Advisor HW Helper P: 4,300 For matrices I've seen notations like $$A_\mathscr{B}$$ or $$[A]_\mathscr{B}$$ for something like "the matrix representation of the linear form A with respect to basis $\mathscr{B}$".
 HW Helper P: 3,440 I was talking about: $$x = x^i \ e_i = {x^i}^\prime \ {e_i}^\prime = x^\prime$$ If you're asking for a notation for just the components of a vector (without the base vectors), then I would just use: $x_i$ or $x_i'$ The index is left over, like a dummy variable, so it is a notation which refers to any one of the components.