Status connectivity indices of line graphs

2021 ◽  
Author(s):  
Harishchandra S. Ramane ◽  
Saroja Y. Talwar
Keyword(s):  
Line Graphs ◽  
Connectivity Indices

Computing Reduced Connectivity Indices of Certain Nanotubes

2018 ◽  
Vol 8 (11) ◽  
pp. 1174-1180 ◽  
Author(s):  
V. R. Kulli
Keyword(s):  
Connectivity Indices

The Antifungal Activity of Some Aliphatic and Aromatic Acids

1992 ◽  
Vol 57 (5) ◽  
pp. 1134-1142 ◽  
Author(s):  
Bohuslav Rittich ◽  
Marta Pirochtová ◽  
Jiří Hřib ◽  
Kamila Jurtíková ◽  
Petr Doležal
Keyword(s):  
Biological Activities ◽  
Pure Water ◽  
Water System ◽  
Penicillium Expansum ◽  
Aromatic Acids ◽  
Antifungal Activities ◽  
Aliphatic Acids ◽  
Significant Relationships ◽  
Physico Chemical ◽  
Connectivity Indices

The present paper deals with the relationship between biological activities of some aliphatic and aromatic acids and their physico-chemical parameters expressing the influence of hydrophobic factors. The test strain in the biotest of growth inhibition was the fungus Fusarium moniliforme CCMF-180 and Penicillium expansum CCMF-576. Significant relationship between antifungal activities of un-ionized form of aliphatic acids and their capacity factors (log k'0) extrapolated to pure water, partition coefficients determined in 1-octanol-water system (log Poct) and the first order of molecular connectivity indices (1χ) were calculated. The ionized form of aliphatic acids were antifungally active too. For benzoic acids significant relationships between antifungal activities and capacity factors of anionic form (log k'ia) were calculated.

scholarly journals The properties of anti-fuzzy line graphs regular

2021 ◽  
Vol 1872 (1) ◽  
pp. 012010
Author(s):  
Y Trisanti ◽  
T Nusantara
Keyword(s):  
Line Graphs

On maximal energy of line graphs with given parameters

2021 ◽  
Vol 619 ◽  
pp. 12-49
Author(s):  
Yiting Cai ◽  
Bo Zhou ◽  
Mengmeng Gao
Keyword(s):  
Line Graphs ◽  
Maximal Energy

scholarly journals Mathematical Properties of Variable Topological Indices

Symmetry ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 43
Author(s):  
José M. Sigarreta
Keyword(s):  
Real Number ◽  
Large Class ◽  
Symmetric Functions ◽  
Topological Indices ◽  
Current Interest ◽  
Zagreb Indices ◽  
Mathematical Properties ◽  
Connectivity Indices ◽  
Optimal Bounds ◽  
New Framework

A topic of current interest in the study of topological indices is to find relations between some index and one or several relevant parameters and/or other indices. In this paper we study two general topological indices Aα and Bα, defined for each graph H=(V(H),E(H)) by Aα(H)=∑ij∈E(H)f(di,dj)α and Bα(H)=∑i∈V(H)h(di)α, where di denotes the degree of the vertex i and α is any real number. Many important topological indices can be obtained from Aα and Bα by choosing appropriate symmetric functions and values of α. This new framework provides new tools that allow to obtain in a unified way inequalities involving many different topological indices. In particular, we obtain new optimal bounds on the variable Zagreb indices, the variable sum-connectivity index, the variable geometric-arithmetic index and the variable inverse sum indeg index. Thus, our approach provides both new tools for the study of topological indices and new bounds for a large class of topological indices. We obtain several optimal bounds of Aα (respectively, Bα) involving Aβ (respectively, Bβ). Moreover, we provide several bounds of the variable geometric-arithmetic index in terms of the variable inverse sum indeg index, and two bounds of the variable inverse sum indeg index in terms of the variable second Zagreb and the variable sum-connectivity indices.

Strongly even cycle decomposable 4-regular line graphs

2021 ◽  
Vol 94 ◽  
pp. 103315
Author(s):  
Wenzhong Liu ◽  
Jiancheng Wang ◽  
Qing Cui ◽  
Yan Yang
Keyword(s):  
Line Graphs ◽  
Regular Line
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