Vertex and edge Co-PI indices of bridge graphs

  • Authors

    • Sharmila Devi Kongu Arts and Science College (Autonomous), Erode.
    • V. Kaladevi Bishop Heber College, Trichy
    2016-02-13
    https://doi.org/10.14419/ijams.v6i1.8398
  • Bridge Graph, Co-PI Index, Edge Co-PI Index.

  • The Co-PI index of a graph G is denoted by Co-PI(G) and  is defined as Co-PI(G  is the number of vertices of G whose distance to the vertex u is less than the distance to the vertex v in G. Similarly, the edge Co-PI index of G is defined as Co-PIe(G) is number of edges of G whose distance  to the vertex u is less than the distance to the vertex v in G.  In this paper, the upper bounds for the Co-PI and edge Co-PI indices of bridge graph are obtained.

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  • How to Cite

    Devi, S., & Kaladevi, V. (2016). Vertex and edge Co-PI indices of bridge graphs. International Journal of Advanced Mathematical Sciences, 4(2), 44-46. https://doi.org/10.14419/ijams.v6i1.8398