Results 91 to 100 of about 5,819 (125)

On the Distance Signless Laplacian Spectrum of Graphs

Bulletin of the Malaysian Mathematical Sciences Society, 2018
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Abdollah Alhevaz, Maryam Baghipur, E Hashemi   +2 more
exaly   +4 more sources

On the signless Laplacian and normalized Laplacian spectrum of the zero divisor graphs

Ricerche Di Matematica, 2020
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Mojgan Afkhami, Zahra Barati, Kazem Khashyarmanesh   +2 more
exaly   +3 more sources

The Laplacian and signless Laplacian spectrum of semi-Cayley graphs over abelian groups

Journal of Applied Mathematics and Computing, 2015
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Xing Gao, Huazhong Lu
exaly   +4 more sources

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. In [X. Liu and P.
Ali Zeydi Abdian, Sara Pouyandeh, Bahman Askari   +2 more
exaly   +3 more sources

Signless Laplacian Spectrum of a Graph

Linear Algebra and its Applications, 2023
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 ...
A. Ghodrati, M. Hosseinzadeh
semanticscholar   +2 more sources

Distance signless Laplacian spectrum of a graph

Frontiers of Mathematics in China, 2021
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Huicai Jia, W. Shiu
semanticscholar   +3 more sources

On the signless Laplacian spectrum of the comaximal graphs

Asian-European Journal of Mathematics, 2022
Assume that [Formula: see text] is a commutative ring with nonzero identity. The comaximal graph of [Formula: see text], denoted by [Formula: see text], is a simple graph whose vertex set consists of all elements of [Formula: see text], and two distinct vertices [Formula: see text] and [Formula: see text] are adjacent if and only if [Formula: see text]
M. Afkhami, Z. Barati, K. Khashyarmanesh
semanticscholar   +3 more sources

On distance signless Laplacian spectrum of the complements of unicyclic graphs and trees

Linear Algebra and its Applications, 2021
Let G be a connected graph, we define D Q ( G ) = T r ( G ) + D ( G ) as distance signless Laplacian matrix of G, where T r ( G ) and D ( G ) are diagonal matrix with vertex transmissions of G and distance matrix of G, respectively.
Yuanjing Li, Rui Qin, Dan Li
semanticscholar   +3 more sources

Signless Laplacian spectrum of the cozero-divisor graph of the commutative ring ℤ𝑛

Georgian Mathematical Journal, 2023
Let 𝑅 be a commutative ring with identity 1 ≠ 0 1\neq 0 and let Z ⁢ ( R ) ′ Z(R)^{\prime} be the set of all non-zero and non-unit elements of ring 𝑅. Further, Γ ′ ⁢ ( R ) \Gamma^{\prime}(R) denotes the cozero-divisor graph of 𝑅, is an undirected graph ...
Mohd Rashid, M. Mozumder, Mohd Anwar
semanticscholar   +2 more sources

On distance signless Laplacian spectrum of graphs and spectrum of zero divisor graphs of ℤn

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 in terms of their adjacency spectrum and the spectrum of an auxiliary matrix.
S. Pirzada, B. Rather, M. Aijaz, T. A. Chishti   +3 more
semanticscholar   +2 more sources