Results 11 to 20 of about 26,813 (231)

A study on the empirical distribution of the scaled Hankel matrix eigenvalues [PDF]

open access: yesJournal of Advanced Research, 2015
The empirical distribution of the eigenvalues of the matrix XXT divided by its trace is evaluated, where X is a random Hankel matrix. The distribution of eigenvalues for symmetric and nonsymmetric distributions is assessed with various criteria.
Hossein Hassani   +2 more
doaj   +2 more sources

A Hankel Matrix Acting on Spaces of Analytic Functions [PDF]

open access: greenIntegral Equations and Operator Theory, 2017
If $ $ is a positive Borel measure on the interval $[0, 1)$ we let $\mathcal H_ $ be the Hankel matrix $\mathcal H_ =( _{n, k})_{n,k\ge 0}$ with entries $ _{n, k}= _{n+k}$, where, for $n\,=\,0, 1, 2, \dots $, $ _n$ denotes the moment of order $n$ of $ $. This matrix induces formally the operator $$\mathcal{H}_ (f)(z)= \sum_{n=0}^{\infty}\left(\
Daniel Girela, Noel Merchán
openalex   +6 more sources

Fredholm Property of Matrix Wiener-Hopf plus and minus Hankel Operators with Semi-Almost Periodic Symbols [PDF]

open access: diamondCubo, 2010
We will present sufficient conditions for the Fredholm property of Wiener-Hopf plus and minus Hankel operators with different Fourier matrix symbols in the C*-algebra of semialmost periodic elements.
L. P Castro, A. S. Silva
doaj   +2 more sources

Analysis of Cardiosignals Cohesion based on Hankel Matrix [PDF]

open access: green, 2008
A big part of heart disease diagnostics criteria is collected by registration and analysis of cardio signals that show electric heart activity disturbance (ECG) and hemodynamic and mechanic activity changes as impedance cardiograms (ICG) and seismocardiograms (SCG).
Gintare Kersulyte   +4 more
  +6 more sources

On Hankel transforms of generalized Bessel matrix polynomials

open access: yesAIMS Mathematics, 2021
The present article deals with the evaluation of the Hankel transforms involving Bessel matrix functions in the kernel. Moreover, these transforms are associated with products of certain elementary functions and generalized Bessel matrix polynomials.
Mohamed Abdalla
doaj   +2 more sources

Delayformer: Spatiotemporal Transformation for Predicting High-Dimensional Dynamics. [PDF]

open access: yesAdv Sci (Weinh)
Delayformer introduces a multivariate spatiotemporal transformation (mvSTI) that converts observed variables into delay‐embedded states and cross‐learns their dynamics using a shared Vision Transformer encoder. This approach, grounded in dynamical systems theory, simultaneously predicts all variables in high‐dimensional systems, outperforming state‐of ...
Wang Z, Tao P, Chen L.
europepmc   +2 more sources

Robust estimation of synchronized spontaneous otoacoustic emission via singular value decomposition and optimal shrinkage [PDF]

open access: yesJASA Express Letters, 2023
We investigate matrix signal processing techniques for estimating synchronized spontaneous otoacoustic emission (OAE) in noise. Responses to repeated clicks are first stored in a matrix, and singular value decomposition is either applied in the time ...
Hao-Ping Lin, Yi-Wen Liu
doaj   +1 more source

Generalized Data–Driven Predictive Control: Merging Subspace and Hankel Predictors

open access: yesMathematics, 2023
Data–driven predictive control (DPC) is becoming an attractive alternative to model predictive control as it requires less system knowledge for implementation and reliable data is increasingly available in smart engineering systems.
M. Lazar, P. C. N. Verheijen
doaj   +1 more source

H-representation method for solving reduced biquaternion matrix equation

open access: yesMathematical Modelling and Control, 2022
In this paper, we study the Hankel and Toeplitz solutions of reduced biquaternion matrix equation (1.1). Using semi-tensor product of matrices, the reduced biquaternion matrix equation (1.1) can be transformed into a general matrix equation of the form ...
Xueling Fan   +3 more
doaj   +1 more source

Hankel matrix normalization for robust damage detection

open access: green, 2019
In the context of detecting changes in structural systems, multiple vibration-based damage detection methods have been proposed and successfully applied to both mechanical and civil structures over the past years. One of the popular schemes is based on a robust subspace-based residual and enjoys favorable statistical and computational properties, like ...
Szymon Greś   +4 more
openalex   +5 more sources

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