Results 131 to 140 of about 1,309,008 (158)

The fan graph is determined by its signless Laplacian spectrum

Czechoslovak Mathematical Journal, 2019
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Liu, Muhuo, Yuan, Yuan, Das, Kinkar Chandra   +2 more
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Laplacian and signless Laplacian spectrum of commuting graphs of finite groups

2018
Summary: The commuting graph of a finite non-abelian group \(G\) with center \(Z(G)\), denoted by \(\Gamma_G\), is a simple undirected graph whose vertex set is \(G\setminus Z(G)\), and two distinct vertices \(x\) and \(y\) are adjacent if and only if \(xy = yx\).
Dutta, Jutirekha, Nath, Rajat
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Signless Laplacian spectrum of a class of generalized corona and its application

Discrete Mathematics, Algorithms and Applications, 2018
Let [Formula: see text] be a graph with [Formula: see text] edges, [Formula: see text] the subdivision graph of [Formula: see text] with [Formula: see text] the set of inserted vertices of [Formula: see text]. The generalized subdivision-edge corona graph [Formula: see text] of [Formula: see text] and [Formula: see text] is the graph obtained from ...
Pengli Lu, Ke Gao, Yumo Wu
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Signless Laplacian spectrum of a graph

Linear Algebra and its Applications
This article presents a significant contribution to the field of algebraic graph theory with a particular focus on the signless Laplacian spectrum of graphs. The authors successfully establish tight upper bounds for all signless Laplacian eigenvalues of a graph characterized by a prescribed order and minimum degree, notably surpassing previously known ...
Amir Hossein Ghodrati, Mohammad Ali Hosseinzadeh   +1 more
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Signless Laplacian spectrum of the cozero-divisor graph of the commutative ring ℤ _𝑛

Georgian Mathematical Journal, 2023
Abstract Let 𝑅 be a commutative ring with identity 1 ≠ 0
Mohd Rashid, Muzibur Rahman Mozumder, Mohd Anwar   +2 more
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The Laplacian and signless Laplacian spectrum of semi-Cayley graphs over abelian groups

Journal of Applied Mathematics and Computing, 2015
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Gao, Xing, Lü, Huazhong, Hao, Yifei
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On distance signless Laplacian spectrum of graphs and spectrum of zero divisor graphs of ℤ_n

Linear and Multilinear Algebra, 2020
For a simple connected graph G of order n, we obtain the distance signless Laplacian spectrum of the joined union of regular graphs G 1 , G 2 , … , G n in terms of their adjacency spectrum and the ...
S. Pirzada, Bilal A. Rather, M. Aijaz, T. A. Chishti   +3 more
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Which multicone graphs are determined by their signless Laplacian spectrum? (The proof of a conjecture)

Journal of Discrete Mathematical Sciences and Cryptography, 2019
A multicone graph is defined to be the join of a clique and a regular graph. Let Km and denote a complete graph on m vertices and the complement of a complete graph on n vertices, respectively.
Ali Zeydi Abdian, Sara Pouyandeh, Bahman Askari   +2 more
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Two classes of graphs determined by the signless Laplacian spectrum

Linear Algebra and its Applications
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Jiachang Ye, Muhuo Liu, Zoran Stanić
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The distance Laplacian and distance signless Laplacian spectrum of the subdivision-vertex join and subdivision-edge join of two regular graphs

Discrete Mathematics, Algorithms and Applications, 2019
Let [Formula: see text] be a connected graph with a distance matrix [Formula: see text]. Let [Formula: see text] and [Formula: see text] be, respectively, the distance Laplacian matrix and the distance signless Laplacian matrix of graph [Formula: see text], where [Formula: see text] denotes the diagonal matrix of the vertex transmissions in [Formula ...
Deena C. Scaria, Gopalapillai Indulal
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