  In this paper, we present a method to construct full separability criteria
for tripartite systems of qubits. The spirit of our approach is that a
tripartite pure state can be regarded as a three-order tensor that provides an
intuitionistic mathematical formulation for the full separability of pure
states. We extend the definition to mixed states and given out the
corresponding full separability criterion. As applications, we discuss the
separability of several bound entangled states, which shows that our criterion
is feasible.
