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Keywords:
domination number; paired-domination number; tree
domination number; paired-domination number; tree
Summary:
A set $S$ of vertices in a graph $G$ is called a paired-dominating set if it dominates $V$ and $\langle S\rangle $ contains at least one perfect matching. We characterize the set of vertices of a tree that are contained in all minimum paired-dominating sets of the tree.
References:
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