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Generalized exponents of primitive two-colored digraphs

机译:本原二色有向图的广义指数

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摘要

A l-colored digraph D-(l) is primitive if there exists a nonnegative integer vector a such that for each ordered pair of vertices x and y (not necessarily distinct), there exists an alpha-walk in D-(l) from x to y. The exponent of the primitive l-colored digraph ((l)) is defined to be the minimum value of the sum of all coordinates of alpha taken over all such alpha. In this paper, we generalize the concept of exponent of a primitive l-colored digraph by introducing three types of generalized exponents. Further, we study the generalized exponents of primitive two-colored Wielandt digraphs.
机译:如果存在一个非负整数向量a,则l色有向图D-(l)是原始的,使得对于每个有序对的顶点x和y(不一定是不同的),在D-(l)中存在从x到y。原始的l色有向图((l))的指数定义为在所有此类alpha上获取的alpha所有坐标的总和的最小值。在本文中,我们通过介绍三种类型的广义指数来概括原始l色有向图的指数概念。此外,我们研究了原始的两色Wielandt有向图的广义指数。

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