Feedback numbers of Kautz digraphs |
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| Authors: | Jun-Ming Xu Ye-Zhou Wu Jia Huang Chao Yang |
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| Institution: | Department of Mathematics, University of Science and Technology of China, Hefei, Anhui 230026, China |
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| Abstract: | A subset of vertices (resp. arcs) of a graph G is called a feedback vertex (resp. arc) set of G if its removal results in an acyclic subgraph. Let f(d,n) (fa(d,n)) denote the minimum cardinality over all feedback vertex (resp. arc) sets of the Kautz digraph K(d,n). This paper proves that for any integers d?2 and n?1 |
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| Keywords: | 05C85 68R10 |
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