An inequality chain of domination parameters for trees
نویسندگان
چکیده
We prove that the smallest cardinality of a maximal packing in any tree is at most the cardinality of an R-annihilated set. As a corollary to this result we point out that a set of parameters of trees involving packing, perfect neighbourhood, R-annihilated, irredundant and dominating sets is totally ordered. The class of trees for which all these parameters are equal is described and we give an example of a tree in which most of them are distinct.
منابع مشابه
Co-Roman domination in trees
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ورودعنوان ژورنال:
- Discussiones Mathematicae Graph Theory
دوره 18 شماره
صفحات -
تاریخ انتشار 1998