摘要: 本文主要在符号图框架拟阵的定义下,通过证明所含的圈中没有平衡圈的符号图G上的参数

大于等于

,从而证明在k=1,以及任意的非负整数d的条件下,不含平衡圈的符号图能分解成两个独立集B
1和I,且I在G中导出图G[I]中顶点最大度为d。
Abstract:
In this paper, we study the signed graph based on the frame matroid. For the signed graph G with-out contains any balanced cycle, we prove the parameter

is greater than

, then we prove when
k=1 and any positive integers d, the signed graph G without con-tains any balanced cycle can decompose into two independent sets
B1 and I, the degree of vertex in the induced graph
G[I] is at most d.