Results 31 to 40 of about 480 (138)

Small eigenvalues of large Hermitian moment matrices [PDF]

open access: yes, 2011
We consider an infinite Hermitian positive definite matrix M which is the moment matrix associated with a measure μ with infinite and compact support on the complex plane.
Torrano, E.   +5 more
core   +2 more sources

The reconstruction of an hermitian Toeplitz matrices with prescribed eigenpairs [PDF]

open access: yes, 2010
In this paper we concern the reconstruction of an hermitian Toeplitz matrices with prescribed eigenpairs. Based on the fact that every centrohermitian matrix can be re- duced to a real matrix by a simple similarity transformation, we rst consider the ...
Liu Zhongyun, Zhang Yulin, Chen, Lu
core  

Observer‐Based Active Fault‐Tolerant Sliding Mode Control for Fully‐Constrained CDPRs

open access: yesIET Control Theory &Applications, Volume 20, Issue 1, January/December 2026.
An active fault‐tolerant sliding mode control strategy is developed for cable‐driven parallel robots. It uses real‐time fault estimation and sliding mode control to handle actuator faults and maintain robust tracking performance. ABSTRACT This study introduces an active fault‐tolerant sliding mode control (AFTSMC), designed explicitly for fully ...
Yasna Majdi   +2 more
wiley   +1 more source

Transportation of measure, Young diagrams and random matrices. [PDF]

open access: yes, 2004
The theory of transportation of mesure for general cost functions is used to obtain a novel logarithmic Sobolev inequality for measures on phase spaces of high dimension and hence a concentration of measure inequality.
Blower, Gordon
core  

Quantum quenches in a pseudo-Hermitian Chern insulator

open access: yes, 2023
We propose to uncover the topology of a pseudo-Hermitian Chern insulator by quantum quench dynamics. The Bloch Hamiltonian of the pseudo-Hermitian Chern insulator is defined in the basis of the q-deformed Pauli matrices, which are related to the ...
He, Peng   +3 more
core   +1 more source

Beyond the Hodge theorem: Curl and asymmetric pseudodifferential projections

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 1, January 2026.
Abstract We develop a new approach to the study of spectral asymmetry. Working with the operator curl:=∗d$\operatorname{curl}:={*}\mathrm{d}$ on a connected oriented closed Riemannian 3‐manifold, we construct, by means of microlocal analysis, the asymmetry operator — a scalar pseudodifferential operator of order −3$-3$.
Matteo Capoferri, Dmitri Vassiliev
wiley   +1 more source

Factorizations of Hermitian block Hankel matrices

open access: yes, 1992
The basic results of N.I. Achiezer and M.G. Krein from the classical polynomial moment theory are concerned with certain representations of elements of a positive difinite Hankel matrix.
Tismenetsky, Miron, Miron Tismenetsky
core   +1 more source

Design and Performance Analysis of BCH Codes Construction Over Eisenstein Local Rings Zpsω

open access: yesJournal of Mathematics, Volume 2026, Issue 1, 2026.
A systematic study of BCH codes construction over Eisenstein local rings Zpsω for p ≡ 2(mod3), giving novel structural information to the coding theory, is known as a systematic code study. The rate of code learning, the error‐adjusting program’s potential, and the number of words in the code words are the key factors in determining how well the codes ...
Muhammad Sajjad   +2 more
wiley   +1 more source

The Hermitian Reflexive Solutions and The Anti-Hermitian Reflexive Solutions for A Class of Matrix Equations (AX=B, XC=D)

open access: yes, 2012
In this paper, The Hermitian reflexive solutions and the anti-Hermitian reflexive solutions of matrix equations AX = B, XC = D are considered. With special properties of partitioned matrices and Hermitian reflexive (anti-Hermitian reflexive) matrices ...
Yang, Shitong, Zhou, Shuo
core   +1 more source

The J-numerical range of a J-Hermitian matrix and related inequalities [PDF]

open access: yes, 2008
Recently, indefinite versions of classical inequalities of Schur, Ky Fan and Rayleigh-Ritz on Hermitian matrices have been obtained for J-Hermitian matrices that are J-unitarily diagonalizable, J=Ir[circle plus operator](-Is),r,s>0. The inequalities were
Providência, João da   +3 more
core   +1 more source

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