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Your search keyword '"Carballosa, Walter"' showing total 3 results
Start Over Author "Carballosa, Walter" Topic graph theory Topic molecular connectivity index
3 results on '"Carballosa, Walter"'

1. Computational properties of the arithmetic–geometric index.

Author

Carballosa, Walter, Granados, Ana, Méndez Bermúdez, José Antonio, Pestana, Domingo, and Portilla, Ana

Subjects
*MOLECULAR graphs, *GRAPH theory, *MOLECULAR connectivity index
Abstract

The concept of arithmetic–geometric index was introduced in the chemical graph theory recently, but it has shown to be useful. We obtain in this paper new lower bounds of the arithmetic–geometric index and we characterize graphs extremal with respect to them. [ABSTRACT FROM AUTHOR]

Published
2022
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2. Inequalities Involving the Geometric-Arithmetic Index.

Author

Carballosa, Walter

Subjects
*MOLECULAR graphs, *GRAPH theory, *MOLECULAR connectivity index
Abstract

The concept of geometric-arithmetic index GA1 was introduced in the chemical graph theory recently, but it has shown to be useful. The aim of this paper is to give new inequalities involving the geometric-arithmetic index and characterize extremal graphs with respect to them. [ABSTRACT FROM AUTHOR]

Published
2022

3. Relations between some topological indices and the line graph.

Author

Carballosa, Walter, Granados, Ana, Pestana, Domingo, Portilla, Ana, and Sigarreta, José M.

Subjects
*MOLECULAR connectivity index, *GRAPH theory, *MOLECULAR graphs, *ARITHMETIC mean, *CHEMICAL properties
Abstract

The concepts of geometric–arithmetic and harmonic indices were introduced in the area of chemical graph theory recently. They have proven to correlate well with physical and chemical properties of some molecules. The aim of this paper is to obtain new inequalities involving the first Zagreb, the harmonic, and the geometric–arithmetic G A 1 indices. Furthermore, inequalities relating these indices and line graphs are proven. [ABSTRACT FROM AUTHOR]

Published
2020
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