New results on 3-domination critical graphs
β Scribed by Camino Balbuena, Adriana Hansberg
- Book ID
- 113013748
- Publisher
- Springer
- Year
- 2011
- Tongue
- English
- Weight
- 274 KB
- Volume
- 83
- Category
- Article
- ISSN
- 0001-9054
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## Abstract A graph __G__ is 3βdomination critical if its domination number Ξ³ is 3 and the addition of any edge decreases Ξ³ by 1. Let __G__ be a 3βconnected 3βdomination critical graph of order __n__. In this paper, we show that there is a path of length at least __n__β2 between any two distinct ve
Let Ξ΄, Ξ³, i and Ξ± be respectively the minimum degree, the domination number, the independent domination number and the independence number of a graph G. The graph G is 3-Ξ³-critical if Ξ³ = 3 and the addition of any edge decreases Ξ³ by 1. It was conjectured that any connected 3-Ξ³-critical graph satisf