Results 81 to 90 of about 33,431,346 (225)
Matrix methods for polynomials
Linear Algebra and its Applications, 1981 AbstractFor every complex polynomial a set of special matrices with the characteristic polynomial p will be given. This enables us to apply the Gerschgorin theorem.
openaire +1 more source
A spectrum adaptive kernel polynomial method
The Journal of Chemical Physics, 2023 The kernel polynomial method (KPM) is a powerful numerical method for approximating spectral densities. Typical implementations of the KPM require an a prior estimate for an interval containing the support of the target spectral density, and while such estimates can be obtained by classical techniques, this incurs addition computational costs.
openaire +3 more sources
Hybrid kernel polynomial method
, 2019 The kernel polynomial method allows to sample overall spectral properties of a quantum system, while sparse diagonalization provides accurate information about a few important states. We present a method combining these two approaches without loss of performance or accuracy.
Irfan, Muhammad +6 more
openaire +2 more sources
Modelling guided waves in anisotropic plates using the Legendre polynomial method
MATEC Web of Conferences, 2017 A numerical method to compute phase dispersion curve in unidirectional laminate is described. The basic feature of the proposed method is the expansion of fields quantities in single layer on different polynomial bases.
Zheng Mingfang, He Cunfu, Lu Yan, Wu Bin
doaj +1 more source
4D Track Prediction of Aircraft Based on Improved Sliding Window Polynomial Fitting Method
Hangkong gongcheng jinzhan, 2019 Accurate track prediction is the basis for improving the early warning capability for air threat situation of anti-collision, for this reason, an improved sliding window polynomial fitting track prediction method is proposed to intrusion aircraft.
Zhang Jianxiang +3 more
doaj +1 more source
IEEE AccessThis paper proposes a method to synthesize a decentralized polynomial observer for the large-scale nonlinear system. The polynomial Takagi-Sugeno (T-S) fuzzy framework is employed to model the large-scale nonlinear system to increase the accuracy and ...
Van-Phong Vu, Van-Thuyen Ngo, Yi Ding
doaj +1 more source
Constructing Polynomial Block Methods
, 2020 The recently introduced polynomial time integration framework proposes a novel way to construct time integrators for solving systems of first-order ordinary differential equation by using interpolating polynomials in the complex time plane. In this work we continue to develop the framework by introducing several additional types of polynomials and ...
openaire +2 more sources
Algebraic Methods for Modified Orthogonal Polynomials [PDF]
Mathematics of Computation, 1992 Some algebraic methods are given to implement Uvarov’s extended Christoffel theorem. The stability of the algorithms is discussed.
openaire +2 more sources
Polar Varieties and Efficient Real Equation Solving: The Hypersurface Case
, 1996 The objective of this paper is to show how the recently proposed method by Giusti, Heintz, Morais, Morgenstern, Pardo \cite{gihemorpar} can be applied to a case of real polynomial equation solving.
Bank, B. +4 more
core +3 more sources
AIP AdvancesRegional geomagnetic field models can provide detailed insights into the geomagnetic field and are of substantial value for precise maritime navigation and the detection of marine targets. In light of the polynomial model’s numerous advantages, including
Bo Zhu +4 more
doaj +1 more source