  We establish a unified view of polygamy of multi-qubit entanglement. We first
introduce a two-parameter generalization of entanglement of assistance namely
unified entanglement of assistance for bipartite quantum states, and provide an
analytic lowerbound in two-qubit systems. We show a broad class of polygamy
inequalities of multi-qubit entanglement in terms of unified entanglement of
assistance that encapsulates all known multi-qubit polygamy inequalities as
special cases. We further show that this class of polygamy inequalities can be
improved into tighter inequalities for three-qubit systems.
