Results 31 to 40 of about 1,083,846 (122)
Smarandache-Zagreb Index on Three Graph Operators [PDF]
, 2010 Many researchers have studied several operators on a connected graph in which one make an attempt on subdivision of its edges. In this paper, we show how the Zagreb indices, a particular case of Smarandache-Zagreb index of a graph changes with these ...
Ranjini, P.S., Lokesha, V.
core +1 more source
Bounds on Szeged and PI Indexes in terms of Second Zagreb Index [PDF]
, 2012 In this short note, we studied the vertex version and the edge version of the Szeged index and the PI index and obtained bounds for these indices in terms of the Second Zagreb index.
Ranjini P.S. +2 more
core +1 more source
Relations between Wiener, hyper-Wiener and some Zagreb type indices [PDF]
Kragujevac Journal of Science, 2019 In this paper, some inequalities between the Wiener, hyper-Wiener, first Zagreb, second Zagreb, first reformulated Zagreb, second reformulated Zagreb and the general Zagreb indices of a simple graph are given.
Ghalavand Ali +2 more
doaj
EDGE-ZAGREB INDICES OF GRAPHS [PDF]
, 2020 The algebraic study of graph matrices is an important area of Graph Theory giving information about the chemical and physical properties of the corresponding molecular structure.
Cangul, I. N. +2 more
core +2 more sources
Introducing New Exponential Zagreb Indices for Graphs [PDF]
, 2021 New graph invariants, named exponential Zagreb indices, are introduced for more than one type of Zagreb index. After that, in terms of exponential Zagreb indices, lists on equality results over special graphs are presented as well as some new bounds on ...
Aydin, Busra +3 more
core +1 more source
On reformulated zagreb indices with respect to tricyclic graphs
, 2014 The authors Mili$\breve{c}$evi$\acute{c}$ et al. introduced the reformulated Zagreb indices, which is a generalization of classical Zagreb indices of chemical graph theory. In the paper, we characterize the extremal properties of the first reformulated Zagreb index.
Ji, Shengjin, Li, Xia, Qu, Yongke
openaire +2 more sources
IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.An optimal contract decomposition method considering monthly contract disintegration deviation minimisation and its impact on retail pricing strategy, comparing typical decomposition approaches, is investigated in this paper. The TOU price is settled by solving a multi‐objective optimisation problem considering the retailer's expected profit ...
Ruiqi Lyu +4 more
wiley +1 more source
Journal of Chemistry, Volume 2026, Issue 1, 2026.Topological indices are crucial in modeling of molecular structures of graphs and are also useful in correlation with physicochemical properties. In this paper, we propose the Euler Sombor coindex and Gourava Sombor coindex, and we derive bounds by using some graph invariants of a graph such as the degree of a vertex, the order, and the size of a graph.
Suha Wazzan +2 more
wiley +1 more source
Journal of Mathematics, Volume 2026, Issue 1, 2026.In this article, the first eccentricity connectivity coindex is introduced as ECI¯G=∑uv∉EGε2u+ε2v, in which ε(u) denotes the eccentricity of the vertex u in the simple connected graph G. Then, the exact expressions are obtained for the first eccentricity connectivity coindex of some graph products.
Suha Wazzan +2 more
wiley +1 more source
Synthesis of sexual selection: a systematic map of meta‐analyses with bibliometric analysis
Biological Reviews, Volume 99, Issue 6, Page 2134-2175, December 2024.ABSTRACT Sexual selection has been a popular subject within evolutionary biology because of its central role in explaining odd and counterintuitive traits observed in nature. Consequently, the literature associated with this field of study became vast.
Pietro Pollo +4 more
wiley +1 more source