Discussion on the Bases of a Special Primitive Non-powerful Signed Digraph

In order to know more about relative properties of the bases of the primitive non-powerful signed digraph,this paper makes the research on the bases of a special primitive non-powerful signed digraph with three cycles,obtains the upper bounds of the bases with some lemmas and definitions of the primitive non-powerful signed digraph,and by busing the proof by contradiction and connecting with distinguished cycle pair,Frobenius set and other relative knowledge,discusses whether or not there is a pair of SSSD walks in digraph,and gets the bases of the digraph.