Diameter of cyclic directed graph as bound for powers of adjacency matrix












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Consider a cyclic directed graph $G$, is it true that the power series computation of its adjacency matrix $M$ can stop after $k$ steps, being $k$ the directed diameter of $G$, "converging" to a point in which every node in the graph has been reached with any other?



I try to prove this considering the linear independence of the first $k$ powers of $M$. Am I wrong or this holds for directed cyclic graphs too?










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    Consider a cyclic directed graph $G$, is it true that the power series computation of its adjacency matrix $M$ can stop after $k$ steps, being $k$ the directed diameter of $G$, "converging" to a point in which every node in the graph has been reached with any other?



    I try to prove this considering the linear independence of the first $k$ powers of $M$. Am I wrong or this holds for directed cyclic graphs too?










    share|cite|improve this question

























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      Consider a cyclic directed graph $G$, is it true that the power series computation of its adjacency matrix $M$ can stop after $k$ steps, being $k$ the directed diameter of $G$, "converging" to a point in which every node in the graph has been reached with any other?



      I try to prove this considering the linear independence of the first $k$ powers of $M$. Am I wrong or this holds for directed cyclic graphs too?










      share|cite|improve this question













      Consider a cyclic directed graph $G$, is it true that the power series computation of its adjacency matrix $M$ can stop after $k$ steps, being $k$ the directed diameter of $G$, "converging" to a point in which every node in the graph has been reached with any other?



      I try to prove this considering the linear independence of the first $k$ powers of $M$. Am I wrong or this holds for directed cyclic graphs too?







      linear-algebra graph-theory power-series adjacency-matrix






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      asked Nov 21 '18 at 11:20









      Nel Son

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