Results 91 to 100 of about 549,018 (333)

On Matrix Linear Diophantine Equation-Based Digital-Adaptive Block Pole Placement Control for Multivariable Large-Scale Linear Process

AppliedMath
This paper introduces a digital adaptive control framework for large-scale multivariable systems, integrating matrix linear Diophantine equations with block pole placement.
Belkacem Bekhiti, Kamel Hariche, Abdellah Kouzou, Jihad A. Younis, Abdel-Nasser Sharkawy   +4 more
doaj   +1 more source

Chebyshev polynomial method to Landauer–Büttiker formula of quantum transport in nanostructures

AIP Advances, 2020
The Landauer–Büttiker formula describes the electronic quantum transport in nanostructures and molecules. It will be numerically demanding for simulations of complex or large size systems due to, for example, matrix inversion calculations.
Yan Yu, Yan-Yang Zhang, Lei Liu, Si-Si Wang, Ji-Huan Guan, Yang Xia, Shu-Shen Li   +6 more
doaj   +1 more source

More on Rotations as Spin Matrix Polynomials

, 2015
Any nonsingular function of spin j matrices always reduces to a matrix polynomial of order 2j. The challenge is to find a convenient form for the coefficients of the matrix polynomial. The theory of biorthogonal systems is a useful framework to meet this
Curtright, Thomas L.
core   +1 more source

Polynomial supersymmetry for matrix Hamiltonians [PDF]

Physics Letters A, 2013
9 ...
openaire   +3 more sources

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

Advanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano, Fabián Calleja, Ji Dai, Massimo Tallarida, Vera Marinova, Alessandro Barla, Marc G. Cuxart, Pierluigi Gargiani, Gonzalo N. Molina, José Angel Silva‐Guillén, Adriana I. Figueroa, Kevin García‐Díez, Sergio O. Valenzuela, Aitor Mugarza, Amadeo L. Vázquez de Parga, Rodolfo Miranda, Francisco Guinea, Manuela Garnica, Miguel A. Valbuena   +18 more
wiley   +1 more source

Realization in Generalized State Space form for 2-D Polynomial System Matrices

Sultan Qaboos University Journal for Science, 2005
In this paper, a direct realization procedure is presented that brings a general 2-D polynomial system matrix to generalized state space (GSS) form, such that all the relevant properties including the zero structure of the system matrix are retained.
M.S. Boudellioua, B. Chentouf
doaj   +1 more source

Asymmetry of the Ferroelectric Phase Transition in BaTiO3

Advanced Materials, EarlyView.
Phase transitions are typically assumed to behave identically in forward and reverse. This work shows that in the ferroelectric material barium titanate this is not true: heating drives an abrupt, first‐order jump, while cooling gives a smooth, continuous change.
Asaf Hershkovitz, Elangovan Hemaprabha, Rajesh Mandal, Pravin Kavle, Jamil Tanus, Maya Barzilay, Ching‐Che Lin, David Spirito, Semën Gorfman, Bo Wang, Ignacio J. Villar‐García, Neus Domingo, Long‐Qing Chen, Lane W. Martin, Yachin Ivry   +14 more
wiley   +1 more source

Computation of nonlinear eigenvalues based on the Ore determinant: preliminary results [PDF]

Proceedings of the Estonian Academy of Sciences
The concept of eigenvalues has recently been generalized for nonlinear systems, but the method to find them is missing. Unlike the linear case, now one has to deal with non-commutative polynomials from the Ore ring. In the paper, the Ore determinant of a
Miroslav Halás, Arvo Kaldmäe, Ülle Kotta, Juraj Slačka   +3 more
doaj   +1 more source

Integral closure of rings of integer-valued polynomials on algebras

, 2014
Let $D$ be an integrally closed domain with quotient field $K$. Let $A$ be a torsion-free $D$-algebra that is finitely generated as a $D$-module. For every $a$ in $A$ we consider its minimal polynomial $\mu_a(X)\in D[X]$, i.e.
G. Peruginelli, G. Peruginelli, J.-P. Cahen, J.P. Serre, K.A. Loper, L.E. Dickson, N. Bourbaki, R. Gilmer, S. Evrard, S. Frisch, T.Y. Lam   +10 more
core   +1 more source

Polynomial and rational measure modifications of orthogonal polynomials via infinite-dimensional banded matrix factorizations [PDF]

, 2023
Timon S. Gutleb, Sheehan Olver, Richard Mikaël Slevinsky   +2 more
openalex   +1 more source