文章是对某类带有两个简单圈的不可幂的定号有向图进行了研究,通过分析此图的特点,综合运用指数、SSSD途径对、Frobenius数的相关性质,给出了有向图的基和局部基.
In the paper,we study the non-powerful signed digraph with two simple cycles.By analyzing this kind of digraphs and using the properties of exponents,SSSD walks,Frobeniusnumber,we obtain the equality cases of the base and the local base for digraph.