, we could conclude its tensor character from (85). We can accomplish this by interchanging the summation indices
and
in (85) and adding the resulting equation to (85). We obtain
in which
The tensor character of
, we could conclude its tensor character from (85). We can accomplish this by interchanging the summation indices
and
in (85) and adding the resulting equation to (85). We obtain
in which
The tensor character of