Show that 2 13 0 with equality only if i,j,k = 0 identically. 2r

Show that ρ

2 13 ≥ 0 with equality only if κ

i,j,k

= 0 identically.

μ2r =

1.3…(2r−1)ν

r

(ν−2)…(ν−2r) 2r < ν

ρ4 = 6/ (ν − 4) for ν > 4

¯