Results 71 to 80 of about 434,100 (202)

Some Hyperbolic Iterative Methods for Linear Systems

open access: yesJournal of Applied Mathematics, 2020
The indefinite inner product defined by J=diagj1,…,jn, jk∈−1,+1, arises frequently in some applications, such as the theory of relativity and the research of the polarized light.
K. Niazi Asil, M. Ghasemi Kamalvand
doaj   +1 more source

High-efficiency implicit scheme for solving first-order partial differential equations

open access: yesResults in Applied Mathematics
We present three new approaches for solving first-order quasi-linear partial differential equations (PDEs) with iterative methods of high stability and low cost.
Alicia Cordero   +3 more
doaj   +1 more source

METODE NUMERICE MATEMATICE APLICABILE ÎN PROBLEME ALE ECONOMIEI AGRARE ŞI MANAGEMENTULUI AGRICOL

open access: yesAgricultura, 2009
The mathematical numerical methods can consistently serve the economical and managerial phenomena, including those dedicated to zootechnical and agricultural areas.
I. VESA
doaj   +1 more source

Gradient Hard Thresholding Pursuit for Sparsity-Constrained Optimization [PDF]

open access: yes, 2013
Hard Thresholding Pursuit (HTP) is an iterative greedy selection procedure for finding sparse solutions of underdetermined linear systems. This method has been shown to have strong theoretical guarantee and impressive numerical performance. In this paper,
Li, Ping, Yuan, Xiao-Tong, Zhang, Tong
core  

Generalization of the interval TOR method for solving interval linear systems

open access: yesAIMS Mathematics
Iterative methods for solving interval linear systems were presented in this paper. By generalizing interval diagonal matrices to interval band matrices, a generalization of the interval two-parameter overrelaxation method (GITOR) was introduced, and the
Lingjian Pu, Yan Zhu, Shiliang Wu
doaj   +1 more source

On computing the minimum singular value of a tensor sum

open access: yesSpecial Matrices, 2019
Recently, the Lanczos bidiagonalization method over tensor space has been proposed for computing the maximum and minimum singular values of a tensor sum T.
Ohashi A., Sogabe T.
doaj   +1 more source

Iterative methods for solving quadratic Volterra integral equations of the first kind

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки
Background. The paper is devoted to the numerical study of integral equations of the first kind with quadratic nonlinearity, which are part of the generalized Volterra integropower series and describe dynamical systems with one input and one output. Such
A.N. Tynda
doaj   +1 more source

Low-Rank Methods for Solving Discrete-Time Projected Lyapunov Equations

open access: yesMathematics
In this paper, we consider the numerical solution of large-scale discrete-time projected Lyapunov equations. We provide some reasonable extensions of the most frequently used low-rank iterative methods for linear matrix equations, such as the low-rank ...
Yiqin Lin
doaj   +1 more source

Approaching a solution for richards-2D equation by finite volumes method with the aid of Picard-Krylov algorithms

open access: yesRevista Águas Subterrâneas, 2017
This research evaluates the Richards equation through the method of finite volumes in two dimensions making use of the Picard’s method with the most computational efficiency.
Marcelo Xavier Guterres   +4 more
doaj   +1 more source

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