Pre-hull number of Cartesian and strong graph products
نویسنده
چکیده
Recently introduced invariants copoint pre-hull number and convex pre-hull number are both numerical measures of nonconvexity of a graph G that is a convex space. We consider in this work both on the Cartesian and the strong product of graphs. Exact values in terms of invariants of the factors are presented for the first mentioned product. For strong product it is shown that such a result does not exists, but particular result for trees is proven.
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تاریخ انتشار 2011