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Background/ Objective: Given a graph G, a dominating set is said to be corona dominating set if every vertex such that or there exist a vertex if then . A corona dominating set is said to be an outer triple connected corona dominating set if any three vertices in lie on a path. The minimum cardinality taken over all the outer triple connected corona dominating sets of is called outer triple connected corona dominating number and it is denoted by . The study aims to find the outer triple connected corona domination number of some graphs. Method: To obtain outer triple connected corona domination number say m by proving and . To prove for a graph G we find a outer triple connected corona dominating set of G with cardinality m and then to prove we prove by contradiction. Findings: We investigated the above parameter for some derived graphs of path, cycle and wheel graph. Novelty : Outer triple connected corona domination number is a new concept in which the conditions of corona domination and triple connected are linked together. Keywords: Corona Domination, Pendent Vertex, Support Vertex, Triple Connected, Isolated Vertex, Pendant vertes
Mahadevan et al. (Thu,) studied this question.