CohenβMacaulay Rings Associated with Dig
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Kazufumi Eto
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Article
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1998
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Elsevier Science
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English
β 171 KB
Let G be a digraph, that is, a pair of sets consisting of a set of vertices Ε½ . and a set of directed edges for a more precise definition, see Section 3 . It is an interesting problem to know how to count the Hamilton cycles of G, that is, cycles containing all vertices of G. In this paper, we will