Finite invariant sets in infinite graphs
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Norbert Polat
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Article
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1996
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Elsevier Science
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English
β 795 KB
The closure of a set A of vertices of an infinite graph G is defined as the set of vertices of G which cannot be finitely separated from A. A subset A of Y(G) is dispersed if it is finitely separated from any ray of G. It is shown that the closure of any dispersed set A of an infinite connected grap