نتایج جستجو برای: zagreb energy

تعداد نتایج: 668603  

1999
H. Gali

Once the renormalization point is choosen near the value of quark masses, a power-correction contribution to the standard effective Hamiltonian has to be added. It is found that such corrections might . considerably influence the E'/E ratio. Submitted to Physics Letters B * Work supported by the Department of Energy, contract DE-AC03-76SF00515. t On leave of absence from the Rudjer Bogkovic Ins...

Recently two new degree concepts have been defined in graph theory: ev-degree and ve-degree. Also the evdegree and ve-degree Zagreb and Randić indices have been defined very recently as parallel of the classical definitions of Zagreb and Randić indices. It was shown that ev-degree and ve-degree topological indices can be used as possible tools in QSPR researches . In this paper we d...

2013
Nilanjan De

The reformulated Zagreb indices of a graph is obtained from the classical Zagreb by replacing vertex degree by edge degree and are defined as sum of squares of the degree of the edges and sum of product of the degrees of the adjacent edges. In this paper we give some explicit results for calculating the first and second reformulated Zagreb indices of dendrimers. Mathematics Subject Classificati...

2012
Ivica Klapan Pero Raos Tomislav Galeta Ljubimko Šimičić Juraj Lukinović Željko Vranješ Josip Maleš Stanko Belina

Ivica Klapan1,2, Pero Raos3, Tomislav Galeta3, Ljubimko Šimičić4, Juraj Lukinović5, Željko Vranješ2,6, Josip Maleš6, Stanko Belina7 and Višeslav Ćuk7 1Klapan Medical Group Polyclinic, Zagreb, 2Faculty of Medicine at University of Osijek, 3Mechanical Engineering Faculty in Slavonski Brod at University of Osijek, 4Department of Physics at University of Zagreb, 5ENT Department, Faculty of Medicine...

Journal: :Collegium antropologicum 2003
Berislav Rozman Zvjezdana Bencetić Klaić Franjo Skreb

The relationship between the bone mineral density (BMD) in Croatian female adults and the average incoming solar radiation at the ground was investigated. The study included 387 volunteers of average age of 60 years from three different towns: Pula (n = 128, age from 35 to 76), Krapina (n = 141, age from 43 to 77), and Zagreb (n = 118, age from 32 to 79). Apart from the different lifestyle, eac...

Journal: :Symmetry 2023

The matrix representations of hypergraphs have been defined via hypermatrices initially. In recent studies, the Laplacian hypergraphs, a generalization matrix, has introduced. this article, based on definition, we derive bounds depending pair-degree, maximum degree, and first Zagreb index for greatest eigenvalue energy r-uniform regular hypergraphs. As result these bounds, Nordhaus–Gaddum type ...

Journal: :communication in combinatorics and optimization 0
mehdi eliasi dept. of mathematics, khansar faculty of mathematics and computer science, khansar, iran, ali ghalavand dept. of mathematics, khansar faculty of mathematics and computer science, khansar, iran

for a graph $g$ with edge set $e(g)$, the multiplicative sum zagreb index of $g$ is defined as$pi^*(g)=pi_{uvin e(g)}[d_g(u)+d_g(v)]$, where $d_g(v)$ is the degree of vertex $v$ in $g$.in this paper, we first introduce some graph transformations that decreasethis index. in application, we identify the fourteen class of trees, with the first through fourteenth smallest multiplicative sum zagreb ...

Journal: :transactions on combinatorics 2016
mehdi eliasi ali ghalavand

‎for a graph $g$ with edge set $e(g)$‎, ‎the multiplicative second zagreb index of $g$ is defined as‎ ‎$pi_2(g)=pi_{uvin e(g)}[d_g(u)d_g(v)]$‎, ‎where $d_g(v)$ is the degree of vertex $v$ in $g$‎. ‎in this paper‎, ‎we identify the eighth class of trees‎, ‎with the first through eighth smallest multiplicative second zagreb indeces among all trees of order $ngeq 14$‎.

Journal: :Croatian medical journal 2002
Mirjana Nasić Stjepan Oresković

AIM To identify factors contributing to significant differences between two university hospital departments of ophthalmology, one in Paris, France, and the other in Zagreb, Croatia, in their clinical effectiveness and cost-efficiency. METHOD Structural, clinical, and financial characteristics of a Croatian and French ophthalmology department were compared for the 1996-2000 period. We used Par...

Journal: :Hacettepe Journal of Mathematics and Statistics 2019

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