|
|
Signless Laplacian Spectral Moments of Graphs and Ordering Some Graphs With Respect To Them
|
|
|
|
|
نویسنده
|
Taghvaee Fatemeh ,Fath-Tabar Gholam Hossein
|
منبع
|
Journal Of Algebraic Structures And Their Applications - 2014 - دوره : 1 - شماره : 2 - صفحه:133 -141
|
|
|
چکیده
|
Let g=(v,e) be a simple graph. denote by d(g) the diagonal matrix diag(d1,⋯,dn), where di is the degree of vertex i and a(g) the adjacency matrix of g. the signless laplacianmatrix of g is q(g)=d(g)+a(g) and the k−th signless laplacian spectral moment of graph g is defined as tk(g)=∑ni=1qki, k⩾0, where q1,q2, ⋯, qn are the eigenvalues of the signless laplacian matrix of g. in this paper we first compute the k−th signless laplacian spectral moments of a graph for small k and then we order some graphs with respect to the signless laplacian spectral moments.
|
کلیدواژه
|
Spectral Moments Sequence ,Signless Laplacian ,Generalized Petersen Graph ,T-Order
|
آدرس
|
University Of Kashan, Faculty Of Mathematical Sciences, Department Of Pure Mathematics, ایران, University Of Kashan, Faculty Of Mathematical Sciences, Department Of Pure Mathematics, ایران
|
پست الکترونیکی
|
fahtabar@kashanu.ac.ir
|
|
|
|
|
|
|
|
|
|
|
|
Authors
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|