Results 41 to 50 of about 1,914,031 (237)

On the second minimizing graph in the set of complements of trees

open access: yesAKCE International Journal of Graphs and Combinatorics, 2019
Let G be a graph of order n and A(G)=[ai,j]be its adjacency matrix such that ai,j=1 if viis adjacent to vjand ai,j=0 otherwise, where 1≤i,j≤n. In a certain family of graphs, a graph is called minimizing (or second minimizing) if the least eigenvalue of ...
M. Javaid
doaj   +2 more sources

An eigenvalue localization set for tensors and its applications

open access: yesJournal of Inequalities and Applications, 2017
A new eigenvalue localization set for tensors is given and proved to be tighter than those presented by Li et al. (Linear Algebra Appl. 481:36-53, 2015) and Huang et al. (J. Inequal. Appl. 2016:254, 2016).
Jianxing Zhao, Caili Sang
doaj   +1 more source

Generalized detector as a spectrum sensor in cognitive radio networks [PDF]

open access: yes, 2015
The implementation of the generalized detector (GD) in cognitive radio (CR) systems allows us to improve the spectrum sensing performance in comparison with employment of the conventional detectors.
Shbat, M.S., Tuzlukov, V.P.
core   +2 more sources

Inflation with a graceful exit in a random landscape [PDF]

open access: yes, 2016
We develop a stochastic description of small-field inflationary histories with a graceful exit in a random potential whose Hessian is a Gaussian random matrix as a model of the unstructured part of the string landscape.
Pedro, Francisco G., Westphal, Alexander
core   +3 more sources

HUBO formulations for solving the eigenvalue problem

open access: yesResults in Control and Optimization, 2023
Solving the eigenvalue problem is particularly important in almost all fields of science and engineering. With the development of quantum computers, multiple algorithms have been proposed for this purpose.
Kyungtaek Jun, Hyunju Lee
doaj   +1 more source

Scaling Theory of Conduction Through a Normal-Superconductor Microbridge [PDF]

open access: yes, 1994
The length dependence is computed of the resistance of a disordered normal-metal wire attached to a superconductor. The scaling of the transmission eigenvalue distribution with length is obtained exactly in the metallic limit, by a transformation onto ...
A. F. Volkov   +18 more
core   +3 more sources

The decay of Hopf solitons in the Skyrme model [PDF]

open access: yes, 2016
It is understood that the Skyrme model has a topologically interesting baryonic excitation which can model nuclei. So far no stable knotted solutions, of the Skyrme model, have been found. Here we investigate the dynamics of Hopf solitons decaying to the
Foster, David
core   +3 more sources

Bounds on the Minimum Edge Dominating Energy in Terms of Some Parameters of a Graph [PDF]

open access: yesMathematics Interdisciplinary Research, 2023
‎The minimum edge dominating energy‎, ‎denoted by $EE_{F}(G)$‎, ‎is the sum of the absolute values of eigenvalues of the minimum edge dominating matrix of graph $G$‎.
Fateme Movahedi
doaj   +1 more source

Strong "quantum" chaos in the global ballooning mode spectrum of three-dimensional plasmas [PDF]

open access: yes, 2015
The spectrum of ideal magnetohydrodynamic (MHD) pressure-driven (ballooning) modes in strongly nonaxisymmetric toroidal systems is difficult to analyze numerically owing to the singular nature of ideal MHD caused by lack of an inherent scale length.
Ball, Rowena, Cuthbert, P, Dewar, Robert
core   +1 more source

Some inequalities for the minimum M-eigenvalue of elasticity M-tensors

open access: yesJournal of Industrial and Management Optimization, 2020
In this paper, we derive some lower bounds for the minimum M-eigenvalue of elasticity M-tensors, these bounds only depend on the elements of the elasticity M-tensors and they are easy to be verified.
Jun He, Guangjun Xu, Yan-min Liu
semanticscholar   +1 more source

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