A characterization of i-excellent trees
Discrete Mathematics
Total domination in graphs with minimum degree three
Journal of Graph Theory
Graphs with large total domination number
Journal of Graph Theory
WSEAS Transactions on Mathematics
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A set S of vertices in a graph G is a total dominating set of G if every vertex of G is adjacent to some vertex in S (other than itself). The graph G is called total domination excellent if every vertex belongs to some total dominating set of G of minimum cardinality. We provide a constructive characterization of total domination excellent trees.