The stable index of digraphs
semanticscholar（2021）
摘要
The stable index of a digraph D is defined to be the smallest integer k such that D contains two distinct (k+1)-walks with the same initial vertex and terminal vertex if such an integer exists; otherwise the stable index of D is defined to be ∞. We characterize the set of stable indices of digraphs with a given order.
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关键词
digraphs,stable index
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