Results 81 to 90 of about 612,388 (310)

Extremal norm for potentials of Sturm-Liouville eigenvalue problems with separated boundary conditions

open access: yesElectronic Journal of Differential Equations, 2017
For the n-th eigenvalue of a Sturm-Liouville eigenvalue problem with separated boundary conditions, we express the infimum of the $L^1[0,1]$ norm of potentials, in terms of a parameter $\lambda$ and the boundary conditions. Also we indicate where the
Hongjie Guo, Jiangang Qi
doaj  

Making Markov chains less lazy [PDF]

open access: yes, 2013
The mixing time of an ergodic, reversible Markov chain can be bounded in terms of the eigenvalues of the chain: specifically, the second-largest eigenvalue and the smallest eigenvalue. It has become standard to focus only on the second-largest eigenvalue,
Greenhill, Catherine
core  

Computational Modeling of Reticular Materials: The Past, the Present, and the Future

open access: yesAdvanced Materials, EarlyView.
Reticular materials are advanced materials with applications in emerging technologies. A thorough understanding of material properties at operating conditions is critical to accelerate the deployment at an industrial scale. Herein, the status of computational modeling of reticular materials is reviewed, supplemented with topical examples highlighting ...
Wim Temmerman   +3 more
wiley   +1 more source

A note on strong resonance problems for p-Laplacian

open access: yesElectronic Journal of Differential Equations, 2006
In this note, we study the existence of the weak solutions for the p-Laplacian with strong resonance, which generalizes the previous results in one-dimension.
Chunhua Jin, Yuanyuan Ke, Jingxue Yin
doaj  

On a Matrix Inequality Related to the Distillability Problem

open access: yesEntropy, 2018
We investigate the distillability problem in quantum information in ℂ d ⊗ ℂ d . One case of the problem has been reduced to proving a matrix inequality when d = 4 .
Yi Shen, Lin Chen
doaj   +1 more source

Nonlocal Conduction in a Metawire

open access: yesAdvanced Materials, Volume 37, Issue 13, April 2, 2025.
A 1D metawire composed of twisted copper wires is designed and realized. This metamaterial exhibits pronounced effects of nonlocal electric conduction according to Ohm's law. The current at one location not only depends on the electric field at that location but also on other locations.
Julio Andrés Iglesias Martínez   +3 more
wiley   +1 more source

On $\alpha$-spectral theory of a directed k-uniform hypergraph [PDF]

open access: yesComputer Science Journal of Moldova, 2020
In this paper, we study a k-uniform directed hypergraph in general form and introduce its adjacency tensor, Laplacian tensor and signless Laplacian tensor. For the $k$-uniform directed hypergraph $\mathcal{H}$ and $0\leq \alpha
Gholam-Hasan Shirdel   +2 more
doaj  

Low-Cost Online Handwritten Symbol Recognition System in Virtual Reality Environment of Head-Mounted Display

open access: yesMathematics, 2020
Virtual reality is an important technology in the digital media industry, providing a whole new experience for most people. However, its manipulation method is more difficult than the traditional keyboard and mouse.
Chih-Wei Shiu, Jeanne Chen, Yu-Chi Chen
doaj   +1 more source

Single‐Layer Spin‐Orbit‐Torque Magnetization Switching Due to Spin Berry Curvature Generated by Minute Spontaneous Atomic Displacement in a Weyl Oxide

open access: yesAdvanced Materials, EarlyView.
Single‐layer magnetization switching with a small critical current density of ≈106 A cm−2 is demonstrated. The strong intrinsic spin Hall effect, causing the switching, is induced by the synergy of the inherent spin‐orbit coupling and the spontaneous oxygen octahedral rotation in SrRuO3.The findings highlight the immense potential for realizing ...
Hiroto Horiuchi   +11 more
wiley   +1 more source

On Trees as Star Complements in Regular Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2020
Let G be a connected r-regular graph (r ---gt--- 3) of order n with a tree of order t as a star complement for an eigenvalue µ ∉ {−1, 0}. It is shown that n ≤ 1/2 (r + 1)t − 2. Equality holds when G is the complement of the Clebsch graph (with µ = 1, r =
Rowlinson Peter
doaj   +1 more source

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