Lower bounds on signed edge total domination numbers in graphs
H. Karami, S. M. Sheikholeslami, Abdollah Khodkar (2008)
Czechoslovak Mathematical Journal
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The open neighborhood of an edge in a graph is the set consisting of all edges having a common end-vertex with . Let be a function on , the edge set of , into the set . If for each , then is called a signed edge total dominating function of . The minimum of the values , taken over all signed edge total dominating function of , is called the signed edge total domination number of and is denoted by . Obviously, is defined only for graphs which have no connected...