International Journal of Applied Information Systems |
Foundation of Computer Science (FCS), NY, USA |
Volume 12 - Number 27 |
Year of Publication: 2020 |
Authors: M. H. Muddebihal, Geetadevi Baburao |
10.5120/ijais2020451844 |
M. H. Muddebihal, Geetadevi Baburao . Weak Domination in Block Graphs. International Journal of Applied Information Systems. 12, 27 ( February 2020), 15-20. DOI=10.5120/ijais2020451844
For any graph G=(V,E), the block graph B(G) is a graph whose set of vertices is the union of set of blocks of G in which two vertices are adjacent if and only if the corresponding blocks of G are adjacent. For any two adjacent vertices u and v we say that v weakly dominates u if deg(v)=deg(u). A dominating set D of a graph B(G) is a weak block dominating set of B(G), if every vertex in V[B(G) ]-D is weakly dominated by at least one vertex in D. A weak domination number of a block graph B(G) is the minimum cardinality of a weak dominating set of B(G). In this paper, we study a graph theoretic properties of γWB (G) and many bounds were obtained in terms of elements of G and the relationship with other domination parameters were found.