Results 21 to 30 of about 28,977 (200)

Weighted Szeged indices of some graph operations [PDF]

open access: yesTransactions on Combinatorics, 2016
In this paper, the weighted Szeged indices of Cartesian product and Corona product of twoconnected graphs are obtained. Using the results obtained here, the weighted Szeged indices ofthe hypercube of dimension n, Hamming graph, C4 nanotubes, nanotorus ...
Kannan Pattabiraman, P. Kandan
doaj  

Szeged index of \(TUC_4C_8(S)\) nanotubes

open access: yesEuropean Journal of Combinatorics, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Abbas Heydari, Bijan Taeri
openaire   +1 more source

On Extremal Graphs of Weighted Szeged Index

open access: yesCoRR, 2019
An extension of the well-known Szeged index was introduced recently, named as weighted Szeged index (\(wSz(G)\)). This paper is devoted to characterizing the extremal trees and graphs of this new topological invariant. In particular, we proved that the star is a tree having the maximal \(wSz(G)\).
Bok, Jan   +3 more
openaire   +3 more sources

Revised Szeged Index and Revised Edge Szeged Index of Certain Special Molecular Graphs [PDF]

open access: yesInternational Journal of Applied Physics and Mathematics, 2014
In theoretical chemistry, the revised Szeged index and revised Szeged edge index were introduced to measure the stability of alkanes and the strain energy of cycloalkanes. In this paper, by virtue of mathematical derivation, we determine the revised Szeged index and revised edge Szeged index of fan molecular graph, wheel molecular graph, gear fan ...
Yun Gao, Wei Gao, Li Liang
openaire   +1 more source

The Szeged Index and Padmakar-Ivan Index on the Zero-Divisor Graph of a Commutative Ring

open access: yesContemporary Mathematics and Applications (ConMathA)
The zero-divisor graph of a commutative ring is a graph where the vertices represent the zero-divisors of the ring, and two distinct vertices are connected if their product equals zero.
Jinan Ambar   +2 more
doaj   +1 more source

Gauge invariance and the interpretation of inter- and intraband processes in high-order harmonic generation from bulk solids [PDF]

open access: yes, 2017
A theoretical model for high-order harmonic generation (HHG) in bulk solids is considered. Our approach treats laser-induced inter- and intraband currents on an equal footing.
Foldi, Peter
core   +3 more sources

On a relation between Szeged and Wiener indices of bipartite graphs [PDF]

open access: yesTransactions on Combinatorics, 2012
Hansen et. al., using the AutoGraphiX software package, conjectured that the Szeged index Sz(G) and the Wiener index W(G) of a connected bipartite graph G with n ≥ 4 vertices and m ≥ n edges, obeys the relation Sz(G) − W(G) ≥ 4n − 8. Moreover, this bound
Ivan Gutman   +3 more
doaj  

Using local climate zones to compare remotely sensed surface temperatures in temperate cities and hot desert cities

open access: yesMoravian Geographical Reports, 2020
Urban and rural thermal properties mainly depend on surface cover features as well as vegetation cover. Surface classification using the local climate zone (LCZ) system provides an appropriate approach for distinguishing urban and rural areas, as well as
Fricke Cathy   +4 more
doaj   +1 more source

Note on PI and Szeged indices

open access: yes, 2011
In theoretical chemistry molecular structure descriptors are used for modeling physico-chemical, pharmacological, toxicologic, biological and other properties of chemical compounds.
Aleksandar Ilić   +24 more
core   +1 more source

Trees with Minimum Weighted Szeged Index Are of a Large Diameter [PDF]

open access: yesSymmetry, 2020
The weighted Szeged index ( w S z ) has gained considerable attention recently because of its unusual mathematical properties. Searching for a tree (or trees) that minimizes the w S z is still going on. Several structural details of a minimal tree were described. Here, it is shown a surprising property that these trees have maximum degree
Risto Atanasov   +2 more
openaire   +3 more sources

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