On the connectedness and diameter of a geometric Johnson Graph
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Let P be a set of n points in general position in the plane. A subset I of P is called an island if there exists a convex set C such that I = P C. In this paper we define the generalized island Johnson graph of P as the graph whose vertex consists of all islands of P of cardinality k,κ two of which are adjacent if their intersection consists of exactly l elements. We show that for large enough values of n, this graph is connected, and give upper and lower bounds on its diameter. © 2013 Discrete Mathematics and Theoretical Computer Science (DMTCS), Nancy, France.
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Connectedness; Diameter; Intersection graph; Islands; Johnson graph Connectedness; Diameter; Intersection graph; Islands; Johnson graph; Set theory; Graph theory
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