Results 1 to 10 of about 1,187 (161)

Characterization of the Minimizing Graph of the Connected Graphs Whose Complements Are Bicyclic [PDF]

open access: yesMathematics, 2017
In a certain class of graphs, a graph is called minimizing if the least eigenvalue of its adjacency matrix attains the minimum. A connected graph containing two or three cycles is called a bicyclic graph if its number of edges is equal to its number of ...
Muhammad Javaid, Javaid Muhammad
exaly   +4 more sources

Metric Dimensions of Bicyclic Graphs

open access: yesMathematics, 2023
The distance d(va,vb) between two vertices of a simple connected graph G is the length of the shortest path between va and vb. Vertices va,vb of G are considered to be resolved by a vertex v if d(va,v)≠d(vb,v).
Asad Khan   +5 more
doaj   +2 more sources

The Maximal Total Irregularity of Bicyclic Graphs [PDF]

open access: yesJournal of Applied Mathematics, 2014
In 2012, Abdo and Dimitrov defined the total irregularity of a graph G=(V,E) as irrtG=1/2∑u,v∈VdGu-dGv, where dGu denotes the vertex degree of a vertex u∈V.
Lihua You   +3 more
doaj   +3 more sources

On the Signless Laplacian Spectral Radius of Bicyclic Graphs with Perfect Matchings [PDF]

open access: yesThe Scientific World Journal, 2014
The graph with the largest signless Laplacian spectral radius among all bicyclic graphs with perfect matchings is determined.
Jing-Ming Zhang   +2 more
doaj   +2 more sources

Maximum Estrada index of bicyclic graphs

open access: yesDiscrete Applied Mathematics, 2015
Let $G$ be a simple graph of order $n$, let $λ_1(G),λ_2(G),...,λ_n(G)$ be the eigenvalues of the adjacency matrix of $G$. The Esrada index of $G$ is defined as $EE(G)=\sum_{i=1}^{n}e^{λ_i(G)}$. In this paper we determine the unique graph with maximum Estrada index among bicyclic graphs with fixed order.
Yi-Zheng Fan
exaly   +4 more sources

On the Laplacian spectral radii of bicyclic graphs

open access: yesDiscrete Mathematics, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jia-Yu Shao
exaly   +2 more sources

On the harmonic index of bicyclic graphs

open access: yesCommunications in Combinatorics and Optimization, 2018
The harmonic index of a graph $G$‎, ‎denoted by $H(G)$‎, ‎is defined as‎ ‎the sum of weights $2/[d(u)+d(v)]$ over all edges $uv$ of $G$‎, ‎where‎ ‎$d(u)$ denotes the degree of a vertex $u$‎. ‎Hu and Zhou [Y‎. ‎Hu and X‎. ‎Zhou‎, ‎WSEAS Trans‎. ‎Math‎. ‎
R. Rasi
doaj   +2 more sources

Bicyclic molecular graphs with the greatest energy [PDF]

open access: yesJournal of the Serbian Chemical Society, 2008
The molecular graph Qn is obtained by attaching hexagons to the end vertices of the path graph Pn-12. Earlier empirical studies indicated that Qn has greatest energy among all bicyclic n-vertex (molecular) graphs.
IVAN GUTMAN   +2 more
doaj   +3 more sources

CONSTRUCTION OF BICYCLIC GRAPH AND ITS APPLICATION IN TRANS JOGJA ROUTES

open access: yesBarekeng, 2023
A bicyclic graph is a type of graph that consists of exactly two cycles. A cycle is a graph that is a closed path where no vertices are repeated except the first and last vertices which are the same.
Aditya Ambarwati, Vira Hari Krisnawati
doaj   +1 more source

The Aα-spectral radius of complements of bicyclic and tricyclic graphs with n vertices

open access: yesSpecial Matrices, 2021
Recently, the extremal problem of the spectral radius in the class of complements of trees, unicyclic graphs, bicyclic graphs and tricyclic graphs had been studied widely.
Chen Chaohui   +2 more
doaj   +1 more source

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