Title
Minimizing the least eigenvalue of bicyclic graphs with fixed diameter.
Abstract
Let B(n, d) be the set of bicyclic graphs with both n vertices and diameter d, and let theta* consist of three paths u(0)w(1)v(0), v(0)w(2)v(0) and u(0)w(3)v(0). For four nonnegative integers n, d, k, j satisfying n >= d + 3, d = k + j + 2, we let B(n,d;k, j) denote the bicyclic graph obtained from theta* by attaching a path of length k to u(0), attaching a path of length j to vertex v(0) and n - d - 3 pedant edges to v(0), and let B(n, d; k, j) = {B(n,d; k, j)vertical bar k + j >= 1}. In this paper, the extremal graphs with the minimal least eigenvalue among all graphs in B(n, d; k, j) are well characterized, some structural characterizations about the extremal graphs with the minimal least eigenvalue among all graphs in B(n, d) are presented as well.
Year
Venue
Keywords
2016
ARS COMBINATORIA
Least eigenvalue,Diameter,Bicyclic graph
Field
DocType
Volume
Graph,Discrete mathematics,Combinatorics,Bicyclic molecule,Mathematics,Eigenvalues and eigenvectors
Journal
124
ISSN
Citations 
PageRank 
0381-7032
0
0.34
References 
Authors
0
3
Name
Order
Citations
PageRank
Guanglong Yu12811.07
Yarong Wu2215.53
Jinlong Shu39924.28