Ali Sousaraei, A. Mahmiani, Omid Khormali
Abstract
The vertex version of PIindex is a molecular structure de- scriptor which is similar to vertex version of Szeged index. In this pa- per, we compute the vertex-PIindex of TUC4C8(S), TUC4C8(R) and HAC5C7(r, p).
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The vertex version of PIindex is a molecular structure de- scriptor which is similar to vertex version of Szeged index. In this pa- per, we compute the vertex-PIindex of TUC4C8(S), TUC4C8(R) and HAC5C7(r, p).
Key concepts: Vertex (graph theory), Pi, Index (typography), Mathematics, Combinatorics, Computer science, Geometry, Graph