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On k-primitivity of two classes of digraphs

โœ Scribed by Yubin Gao; Yanling Shao


Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
112 KB
Volume
430
Category
Article
ISSN
0024-3795

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๐Ÿ“œ SIMILAR VOLUMES


Characterizations of two classes of digr
โœ Zygmunt Jackowski ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 796 KB

In the paper we present two characterizations of classes of digraphs. The first is a forbidden triple characterization of digraphs with augmented adjacency matrices having consecutive ones property for columns. The second is a forbidden circuit characterization of digraphs with totally balanced augm

Local exponents of primitive digraphs
โœ Jian Shen; Stewart Neufeld ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 492 KB

A digraph G = (V, E) is primitive i[~ for some positive integer k, there is a u ~ ~; walk of length k for evew pair u, v of vertices of V. The minimum such k is called the exponent of G, denoted exp(G). The local exponent of G at a vertex u ~ V, denoted expc(u), is the least integer k such that ther