Basis vector
= Basis vector
{title2=$e_i\in\mathcal B$}
A <basis vector> is one of the <vectors> in a specified <basis> of a <vector space>. Its coordinate column in that <basis> has one entry equal to one and all other entries zero. Columns of a <matrix of a linear map> are the images of domain <basis vectors>, expressed in the chosen codomain <basis>.