Results 51 to 60 of about 1,705,971 (292)

A study on determination of some graphs by Laplacian and signless Laplacian permanental polynomials

open access: yesAKCE International Journal of Graphs and Combinatorics, 2023
The permanent of an n × n matrix [Formula: see text] is defined as [Formula: see text] where the sum is taken over all permutations σ of [Formula: see text] The permanental polynomial of M, denoted by [Formula: see text] is [Formula: see text] where In ...
Aqib Khan   +2 more
doaj   +1 more source

Laplacian matrix and its applications [PDF]

open access: yes, 2022
Grafy a Markovské řetězce je možné reprezentovat pomocí matic. Jednou z nejběžnějších forem reprezentace pro grafy je Laplaceova matice. Tato práce o ní dává ucelený přehled a nachází Laplaceova spektra několika základních typů grafů.
Daniel Khol
core  

Polarization Holographic 4D Phenotyping Reveals Nanoplastic Induced Dysfunction in Zooplankton

open access: yesAdvanced Science, EarlyView.
Contaminant‐induced dysfunction in complex aquatic organisms remains difficult to resolve across scales. Polarization Holographic Imaging Microscopy (PHIM) integrates polarization‐sensitive holography with computational volumetric reconstruction for label‐free phenotyping of zooplankton in natural seawater, revealing that nanoplastic stress drives ...
Yuxing Li   +8 more
wiley   +1 more source

Signless Laplacian determinations of some graphs with independent edges

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2018
Let $G$ be a simple undirected graph. Then the signless Laplacian matrix of $G$ is defined as $D_G + A_G$ in which $D_G$ and $A_G$ denote the degree matrix and the adjacency matrix of $G$, respectively.
R. Sharafdini, A.Z. Abdian
doaj   +1 more source

Distance matrix and Laplacian of a tree with attached graphs

open access: yes, 2004
A tree with attached graphs is a tree, together with graphs defined on its partite sets. We introduce the notion of incidence matrix, Laplacian and distance matrix for a tree with attached graphs.
R.B. Bapat, Bapat, R. B., Bapat, R.B.
core   +1 more source

AARS2‐SIRT5‐Driven DLD K445 Lactylation Promotes Cuproptosis Resistance in Glioblastoma Stem Cells

open access: yesAdvanced Science, EarlyView.
Lactylation of DLD at K445 by AARS2 suppresses PDH complex activity and reduces DLAT lipoylation, thereby conferring cuproptosis resistance in glioblastoma stem cells. SIRT5‐mediated delactylation restores PDH function and enhances cuproptosis sensitivity.
Mingtian Ding   +12 more
wiley   +1 more source

SOME INEQUALITIES FOR THE GRAPH ENERGY OF DISTANCE LAPLACIAN MATRIX

open access: yes, 2022
In this paper, the distance laplacian energy for distance matrix is examined. Some bounds for the laplacian eigenvalues of distance matrix are expanded including the distances, the vertices and the edges.
GÖK, GÜLİSTAN KAYA
core  

Analytical Prediction of Critical Transitions in Oscillator Networks With Non‐Local Links

open access: yesAdvanced Science, EarlyView.
An analytical framework reveals how global coupling, second‐harmonic strength, noise, and network structure govern oscillator‐based Ising dynamics. Spectral reduction predicts stability boundaries, while Fokker–Planck analysis captures one‐ to two‐cluster transitions and identifies conditions favoring low‐energy configurations.
Qiang Li   +5 more
wiley   +1 more source

The Laplacian matrix of a graph [PDF]

open access: yes, 1995
This paper is a study of the various matrices associated with graphs. In Chapter 1, the relationship between the Laplacian matrix and the Incidence matrix is explored. The Matrix-Tree Theorem (MTT) is stated here. One of the main objectives of this paper
Amar, Alka
core  

Controllable Superconductivity in Suspended NbSe2

open access: yesAdvanced Electronic Materials, EarlyView.
Suspended NbSe2${\rm NbSe}_2$ provides two complementary routes for controlling superconducting transport. Gate‐driven deformation strains the suspended crystal and tunes its critical temperature and current. Weak thermal anchoring enhances thermal feedback, contributing to multistep hysteresis and negative differential resistance.
Ruihuan Fang   +14 more
wiley   +1 more source

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