Geodesic
On the domination number of prisms of graphs
Discussiones Mathematicae. Graph Theory, Tome 24 (2004) no. 2, pp. 303-318

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For a permutation π of the vertex set of a graph G, the graph π G is obtained from two disjoint copies G₁ and G₂ of G by joining each v in G₁ to π(v) in G₂. Hence if π = 1, then πG = K₂×G, the prism of G. Clearly, γ(G) ≤ γ(πG) ≤ 2 γ(G). We study graphs for which γ(K₂×G) = 2γ(G), those for which γ(πG) = 2γ(G) for at least one permutation π of V(G) and those for which γ(πG) = 2γ(G) for each permutation π of V(G).
Keywords: domination, graph products, prisms of graphs 
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     title = {On the domination number of prisms of graphs},
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Burger, Alewyn; Mynhardt, Christina; Weakley, William. On the domination number of prisms of graphs. Discussiones Mathematicae. Graph Theory, Tome 24 (2004) no. 2, pp. 303-318. http://geodesic.mathdoc.fr/item/DMGT_2004_24_2_a11/