Results 61 to 70 of about 1,235,690 (292)

Inequalities for the Norm and the Numerical Radius of Linear Operators in Hilbert Spaces [PDF]

open access: yes, 2005
In this paper various inequalities between the operator norm and its numerical radius are provided. For this purpose, we employ some classical inequalities for vectors in inner product spaces due to Buzano, Goldstein-Ryff- Clarke, Dragomir-Sándor and ...
Dragomir, Sever S
core   +2 more sources

A spectral method for discriminating thermodynamic phase and retrieving cloud optical thickness and effective radius using transmitted solar radiance spectra [PDF]

open access: yesAtmospheric Measurement Techniques, 2015
A new retrieval scheme for cloud optical thickness, effective radius, and thermodynamic phase was developed for ground-based measurements of cloud shortwave solar spectral transmittance.
S. E. LeBlanc   +3 more
doaj   +1 more source

Albertson (Alb) spectral radii and Albertson (Alb) energies of graph operation

open access: yesFrontiers in Chemistry, 2023
The sum of the absolute eigenvalues of the adjacency matrix make up graph energy. The greatest absolute eigenvalue of the adjacency matrix is represented by the spectral radius of the graph.
Muhammad Mobeen Munir, Urwah Tul Wusqa
doaj   +1 more source

Rainbow Hamiltonicity and the spectral radius

open access: yesDiscrete Mathematics
Let $\mathcal{G}=\{G_1,\ldots,G_n \}$ be a family of graphs of order $n$ with the same vertex set. A rainbow Hamiltonian cycle in $\mathcal{G}$ is a cycle that visits each vertex precisely once such that any two edges belong to different graphs of $\mathcal{G}$.
Yuke Zhang, Edwin R. van Dam
openaire   +4 more sources

Re‐Purposing Sapropterin (Kuvan) for ACTA2‐Related Multisystemic Smooth Muscle Dysfunction Syndrome: A Translational Mechanistic and First‐In‐Human Therapeutic Report

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Multisystemic smooth muscle dysfunction syndrome (MSMDS) is an ultra‐rare, ACTA2‐related disorder characterized by severe cerebrovascular disease, aortic aneurysms, and smooth muscle dysfunction. Using molecular dynamics simulations and in silico drug screening, we identified that sapropterin dihydrochloride (Kuvan) is a candidate capable of ...
Moran Hausman‐Kedem   +9 more
wiley   +1 more source

Special Cases for Numerical Radius and Spectral Radius Inequalities [PDF]

open access: yes, 2015
In  this paper, the aim of this study  is to find special cases  of  some inequalities for numerical radius and spectral radius of a bounded linear operator on a Hilbert space, Finally, some new results about this subject are obtained.
R.M.S, Mahmood,, Al-hawari, M.
core  

On graft transformations decreasing distance spectral radius of graphs

open access: yes, 2021
The distance spectral radius of a connected graph is the largest eigenvalue of its distance matrix. In this paper, we give several less restricted graft transformations that decrease the distance spectral radius, and determine the unique graph with ...
Bo Zhou, Yanna Wang
core   +1 more source

The Minimal Spectral Radius of Graphs with a Given Diameter [PDF]

open access: yes
AMS classsifications: 05C50; 05E99; 94C15;graphs;spectral radius;diameter;networks;virus ...
Kooij, R.E., Dam, E.R. van
core   +2 more sources

On the Spectral Radius and the Genus of Graphs

open access: yesJournal of Combinatorial Theory, Series B, 1995
Let \(G\) be a graph of genus \(g\) and let \(r(G)\) be the largest eigenvalue of the adjacency matrix of \(G\). The author proves that \(r(G)\leq(6| V(G)|+12g-6)^{1/2}\). The bound is slightly improved in the case of some small genus surfaces.
openaire   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

open access: yesAdvanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt   +8 more
wiley   +1 more source

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