Abstract
A dominating set D of a graph G is a subset of V ( G ) such that for every vertex v ∈ V ( G ) , either v ∈ D or there exists a vertex u ∈ D that is adjacent to v in G . Dominating sets of small cardinality are of interest. A connected dominating set C of a graph G is a dominating set of G such that the subgraph induced by the vertices of C in G is connected. A weakly-connected dominating set W of a graph G is a dominating set of G such that the subgraph consisting of V ( G ) and all edges incident with vertices in W is connected. In this paper we present several algorithms for finding small connected dominating sets and small weakly-connected dominating sets of regular graphs. We analyse the average-case performance of these heuristics on random regular graphs using differential equations, thus giving upper bounds on the size of a smallest connected dominating set and the size of a smallest weakly-connected dominating set of random regular graphs.
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