M-Polynomial of Product Graphs

Fuente: arXiv
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Autori principali: Mehiri, El-Mehdi, Klavžar, Sandi
Natura: Preprint
Pubblicazione: 2026
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_version_ 1866918383230910464
author Mehiri, El-Mehdi
Klavžar, Sandi
author_facet Mehiri, El-Mehdi
Klavžar, Sandi
contents The M-polynomial provides a unifying framework for a wide class of degree-based topological indices. Despite its structural importance, general methods for computing the M-polynomial under graph constructions remain limited. In this paper, explicit formulas, and compact ones whenever possible, for the M-polynomial under different graph products whose vertex sets are the Cartesian product of the factors are developed. The products studied are the direct, the Cartesian, the strong, the lexicographic, the symmetric-difference, the disjunction, and the Sierpiński product. The obtained formulas yield a unified structural description of how vertex-degree interactions propagate under graph constructions and extend existing results for degree-based indices at the polynomial level.
format Preprint
id arxiv_https___arxiv_org_abs_2603_10596
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle M-Polynomial of Product Graphs
Mehiri, El-Mehdi
Klavžar, Sandi
Combinatorics
Discrete Mathematics
05C31, 05C09, 05C76, 05C92, 05A15
The M-polynomial provides a unifying framework for a wide class of degree-based topological indices. Despite its structural importance, general methods for computing the M-polynomial under graph constructions remain limited. In this paper, explicit formulas, and compact ones whenever possible, for the M-polynomial under different graph products whose vertex sets are the Cartesian product of the factors are developed. The products studied are the direct, the Cartesian, the strong, the lexicographic, the symmetric-difference, the disjunction, and the Sierpiński product. The obtained formulas yield a unified structural description of how vertex-degree interactions propagate under graph constructions and extend existing results for degree-based indices at the polynomial level.
title M-Polynomial of Product Graphs
topic Combinatorics
Discrete Mathematics
05C31, 05C09, 05C76, 05C92, 05A15
url https://arxiv.org/abs/2603.10596