Example from book: continuum mechanics for engineers 2 edition

[maros522]

example 3.30:
Let the stress tensor components σ_ij be derivable from the symmetric
tensor field φ_ij by the equation σ_ij = ε_iqkε_jpmφ_km,qp. Show that, in the
absence of body forces, the equilibrium equations are satisfied.

I don't have any idea have to solve this problem. Can someone help me?
Thank you.

 

[maros522]

I apologize for bad placed post.
After some time I solve this example. Use the determinant and kronecker delta. After this I found that εiqkεjpm = 0.