# dim(V)^2. So it has the same dimension as the space of linear
# transformations on V. In other words, it's just the right size
# to create an isomorphism between it and our matrices.
# dim(V)^2. So it has the same dimension as the space of linear
# transformations on V. In other words, it's just the right size
# to create an isomorphism between it and our matrices.