The Padmakar-Ivan (PI) index of a graph G is the sum over all edges uv of G of the number of edges which are not equidistant from the vertices u and v. In this paper, we compute the PI index of bridge and chain graphs. Using these formulas, the PI indices of several graphs are computed.
|Number of pages||12|
|State||Published - 2009|
ASJC Scopus subject areas
- Chemistry (all)
- Computer Science Applications
- Computational Theory and Mathematics
- Applied Mathematics