Results 101 to 110 of about 68,836 (161)

Persistent Mayer Dirac. [PDF]

open access: yesJ Phys Complex
Suwayyid F, Wei GW.
europepmc   +1 more source

On the Distance Signless Laplacian Spectrum of Graphs

Bulletin of the Malaysian Mathematical Sciences Society, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Alhevaz, A.   +3 more
openaire   +4 more sources

On the signless Laplacian and normalized signless Laplacian spreads of graphs

Czechoslovak Mathematical Journal, 2023
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Milovanović, Emina   +3 more
openaire   +1 more source

Signless Laplacian spectral radius for a k-extendable graph

Filomat, 2023
Let k and n be two nonnegative integers with n ? 0 (mod 2), and let G be a graph of order n with a perfect matching. Then G is said to be k-extendable for 0 ? k ? n?2/2 if every matching in G of size k can be extended to a perfect matching. In this paper,
Sizhong Zhou, Yuli Zhang
semanticscholar   +1 more source

The signless Laplacian spectral Turán problems for color-critical graphs

Linear Algebra and its Applications
The well-known Tur\'{a}n theorem states that if $G$ is an $n$-vertex $K_{r+1}$-free graph, then $e(G)\le e(T_{n,r})$, with equality if and only if $G$ is the $r$-partite Tur\'{a}n graph $T_{n,r}$.
Jian Zheng, Yongtao Li, Honghai Li
semanticscholar   +1 more source

A signless Laplacian spectral Erdős-Stone-Simonovits theorem

Discrete Mathematics
The celebrated Erd\H{o}s--Stone--Simonovits theorem states that $\mathrm{ex}(n,F)= \big(1-\frac{1}{\chi(F)-1}+o(1) \big)\frac{n^{2}}{2}$, where $\chi(F)$ is the chromatic number of $F$.
Jian Zheng, Honghai Li, Li Su
semanticscholar   +1 more source

Determining some graph joins by the signless Laplacian spectrum

Discrete Applied Mathematics
A graph is determined by its signless Laplacian spectrum if there is no other non-isomorphic graph sharing the same signless Laplacian spectrum. Let $C_l$, $P_l$, $K_l$ and $K_{s,l-s}$ be the cycle, the path, the complete graph and the complete bipartite
Jiachang Ye, Jianguo Qian, Zoran Stanić
semanticscholar   +1 more source

Some bounds for distance signless Laplacian energy-like invariant of networks

Carpathian Mathematical Publications
For a graph or network $G$, denote by $D(G)$ the distance matrix and $Tr(G)$ the diagonal matrix of vertex transmissions. The distance signless Laplacian matrix of $G$ is $D^{Q}(G)=Tr(G)+D(G)$.
A. Alhevaz   +3 more
semanticscholar   +1 more source

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