> This document tells an important lie: it says (e.g., at the top of page 8) that every rank-2 tensor is an outer product of two vectors. Then again, that whol

> This document tells an important lie: it says (e.g., at the top of page 8) that every rank-2 tensor is an outer product of two vectors. Then again, that whole section is in the context of material stresses and permeability, which are described as symmetrical tensors, for which the claim is true.