By using Boolean matrix, some results of power convergence exponent of linedigraph are given.
采用布尔矩阵，得到了线有向幂敛指数的一些结果。
2
By using the matrix representation of a digraph, some results about the index of convergence and period of a linedigraph are obtained.
采用有向图的矩阵表示，得到了线有向图的幂敛指数和周期的有关结果。
3
In this paper, we show that under the condition that the minimum degree is at least 3, the iterated linedigraph of a super-arc-connected digraph is super-connected.