Results 11 to 20 of about 601,840 (265)

Data filtering based stochastic gradient algorithms for multivariable CARAR-like systems

Mathematical Modelling and Analysis, 2013
This paper considers identification problems for a multivariable controlled autoregressive system with autoregressive noises. A hierarchical generalized stochastic gradient algorithm and a filtering based hierarchical stochastic gradient algorithm are ...
Dongqing Wang, Tong Shan, Rui Ding
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A posteriori error estimates for the Lindblad master equation [PDF]

Quantum
We are interested in the simulation of open quantum systems governed by the Lindblad master equation in an infinite-dimensional Hilbert space. To simulate the solution of this equation, the standard approach involves two sequential approximations: first,
Paul-Louis Etienney, Rémi Robin, Pierre Rouchon   +2 more
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Regularization Error Analysis for a Sideways Problem of the 2D Nonhomogeneous Time-Fractional Diffusion Equation

Mathematics, 2022
The inverse and ill-posed problem of determining a solute concentration for the two-dimensional nonhomogeneous fractional diffusion equation is investigated. This model is much worse than its homogeneous counterpart as the source term appears. We propose
Yonggang Chen, Yu Qiao, Xiangtuan Xiong
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A high accuracy numerical method based on spectral theory of compact operator for biharmonic eigenvalue equations

Journal of Inequalities and Applications, 2016
In this study, a high accuracy numerical method based on the spectral theory of compact operator for biharmonic eigenvalue equations on a spherical domain is developed.
Zhendong Luo
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Generalized Beta Prime Distribution Applied to Finite Element Error Approximation

Axioms, 2022
In this paper, we propose a new family of probability laws based on the Generalized Beta Prime distribution to evaluate the relative accuracy between two Lagrange finite elements Pk1 and Pk2 ...
Joël Chaskalovic, Franck Assous
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Estimates of convolutions of certain number-theoretic error terms

International Journal of Mathematics and Mathematical Sciences, 2004
Several estimates for the convolution function C [f(x)]:=∫1xf(y) f(x/y)(dy/y) and its iterates are obtained when f(x) is a suitable number-theoretic error term.
Aleksandar Ivic
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A fully-discrete finite element approximation for the eddy currents problem

Ingeniería y Ciencia, 2013
The eddy current model is obtained from Maxwell’s equations by neglecting the displacement currents in the Amp`ere-Maxwell’s law and it is commonly used in many problems in sciences, engineering and industry (e.g, in induction heating, electromagnetic ...
Ramiro Acevedo, Gerardo Loaiza
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Some Second-Order σ Schemes Combined with an H¹-Galerkin MFE Method for a Nonlinear Distributed-Order Sub-Diffusion Equation

Mathematics, 2020
In this article, some high-order time discrete schemes with an H 1 -Galerkin mixed finite element (MFE) method are studied to numerically solve a nonlinear distributed-order sub-diffusion model.
Yaxin Hou, Cao Wen, Hong Li, Yang Liu, Zhichao Fang, Yining Yang   +5 more
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Numerical analysis of an implicit fully discrete local discontinuous Galerkin method for the fractional Zakharov–Kuznetsov equation

Mathematical Modelling and Analysis, 2012
In this paper we develop and analyze an implicit fully discrete local discontinuous Galerkin (LDG) finite element method for a time-fractional Zakharov–Kuznetsov equation.
Zongxiu Ren, Leilei Wei, Yinnian He, Shaoli Wang   +3 more
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A Crank-Nicolson finite volume element method for two-dimensional Sobolev equations

Journal of Inequalities and Applications, 2016
In this paper, we provide a new type of study approach for the two-dimensional (2D) Sobolev equations. We first establish a semi-discrete Crank-Nicolson (CN) formulation with second-order accuracy about time for the 2D Sobolev equations. Then we directly
Zhendong Luo
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