Some formulae and rules of operation on tensor functions

l Some formulae and rules of operation on tensor functions 

We define a tensor G as the external or dyadic product of two vectors a and b from a Euclidean space by the formula 

Note that for the tensors represented in form (F.l), we have the following rules of vector operations (Zhdanov, 1988) 

Let do a = x, y, z) stand for the unit vectors of the Cartesian system of coordinates. Then tensor Gq can be written in the form 

---