Results 111 to 120 of about 191,170 (252)
Nonsymmetric Reduction-Based Algebraic Multigrid
SIAM Journal on Scientific Computing, 2017 Algebraic multigrid (AMG) is often an effective solver for symmetric positive definite (SPD) linear systems resulting from the discretization of general elliptic PDEs, or the spatial discretization of parabolic PDEs.
T. Manteuffel +3 more
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Galois Theory of Parameterized Differential Equations and Linear Differential Algebraic Groups
, 2005 We present a Galois theory of parameterized linear differential equations where the Galois groups are linear differential algebraic groups, that is, groups of matrices whose entries are functions of the parameters and satisfy a set of differential ...
Cassidy, Phyllis J., Singer, Michael F.
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Discrete Dynamics in Nature and Society, 2016 Some partial differential algebraic equations (PDAEs) system with singular time derivative matrices is analyzed. First, by PDE spectrum theory, this system is formulated as infinite-dimensional singular systems. Second, the state space and its properties
Yushan Jiang, Qingling Zhang
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Commit your works to the Lord, and your thoughts shall be established (Prov. 16:3). Inter-stable control systems [PDF]
Algebraic structures are discussed for control systems that maintain stability in the presence of resonance uncertainties. Dual algebraic operations serve as elementary connections that propagate the stability of inter-stable subsystems.
Vonpragenau, George L.
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Numerical resolution of some BVP using Bernstein polynomials
, 2005 In this work we present a method, based on the use of Bernstein polynomials, for the numerical resolution of some boundary values problems. The computations have not need of particular approximations of derivatives, such as finite differences, or ...
Argentini, Gianluca
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Augmented polynomial matrices and algebraization of switching circuits
Журнал Белорусского государственного университета: Математика, информатика, 2018 Over rings of polynomials with idempotent variables (over arbitrary fields) there are defined classes of augmented matrices (with one distinguished column) that realize Boolean functions.
Yury G. Tarazevich
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Discrete Cartesian Coordinate Transformations: Using Algebraic Extension Methods
Applied SciencesIt is shown that it is reasonable to use Galois fields, including those obtained by algebraic extensions, to describe the position of a point in a discrete Cartesian coordinate system in many cases. This approach is applicable to any problem in which the
Aruzhan Kadyrzhan +3 more
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Solution of Nonlinear Coupled Heat and Moisture Transport Using Finite Element Method
Acta Polytechnica, 2004 This paper deals with a numerical solution of coupled of heat and moisture transfer using the finite element method. The mathematical model consists of balance equations of mass, energy and linear momentum and of the appropriate constitutive equations ...
T. Krejčí
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Journal of Physics: Conference Series, 2018 A new approach to preconditioning based on LU - decomposition for solving systems of linear algebraic equations by iterative methods is proposed. The approach makes it possible to effectively to find an acceptable solution with a minimum filling of sparse matrices.
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