The PI index of phenylenes
β Scribed by Deng, Hanyuan (author);Chen, Shubo (author);Zhang, Jie (author)
- Publisher
- Springer
- Year
- 2006
- Tongue
- English
- Weight
- 101 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0259-9791
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
The Padmakar-Ivan index of a graph G is the sum over all edges uv of G of number of edges which are not equidistant from u and v. In this work, an exact expression for the PI index of the Cartesian product of bipartite graphs is computed. Using this formula, the PI indices of C 4 nanotubes and nanot
The PI index is a graph invariant defined as the summation of the sums of n eu (e|G) and n ev (e|G) over all the edges e = uv of a connected graph G, i.e., PI(G) = eβE(G) [n eu (e|G) + n ev (e|G)], where n eu (e|G) is the number of edges of G lying closer to u than to v and n ev (e|G) is the number