f-Polynomial on Some Graph Operations
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DOI: 10.3390/math7111074
Abstract: Given any function f : Z + → R + , let us define the f-index I f ( G ) = ∑ u ∈ V ( G ) f ( d u ) and… read more here.
Keywords: graph; graph operations; polynomial graph;
Harmonic Index and Harmonic Polynomial on Graph Operations
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DOI: 10.3390/sym10100456
Abstract: Some years ago, the harmonic polynomial was introduced to study the harmonic topological index. Here, using this polynomial, we obtain several properties of the harmonic index of many classical symmetric operations of graphs: Cartesian product,… read more here.
Keywords: harmonic polynomial; index; harmonic index; product ... See more keywords