Modified First Kashvi–Tosha Gamma Stress Index as a Molecular Descriptor for QSPR Analysis of Lower Alkanes
Year: 2026
Type: article
Abstract: Shimbel (1953) introduced the node centrality index, which quantifies the stress of a vertex in a graph. The stress of a vertex is defined as the number of geodesics (shortest paths) that pass through it. A numerical parameter that relates a chemical structure to its physical properties or chemical reactivity is referred to as a topological index of the chemical structure.In this study, we introduce the Modified First Kashvi–Tosha Gamma Stress Index, denoted by $MFKT(G)$, a novel topological index for graphs derived from vertex stresses. Furthermore, we compute $MFKT(G)$ for several standard graphs, establish related results, and derive certain inequalities. Finally, we demonstrate the applicability of $MFKT(G)$ in predicting the physicochemical properties of lower alkanes, thereby highlighting its potential significance in chemical graph theory and QSPR studies.
DOI: 10.5269/bspm.82284
Language: English
Subfield: Discrete Mathematics and Combinatorics
Field: Mathematics
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7212434838