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The PI index of phenylenes

✍ 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

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πŸ“œ SIMILAR VOLUMES


The PI index of phenylenes
✍ Deng, Hanyuan (author);Chen, Shubo (author);Zhang, Jie (author) πŸ“‚ Article πŸ“… 2006 πŸ› Springer 🌐 English βš– 101 KB
The PI index of phenylenes
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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

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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) = e∈E(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

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