Results 31 to 40 of about 4,525,854 (182)

Critical exact solutions for self-gravitating Dirac fields [PDF]

open access: yes, 2016
We consider the Einstein-Dirac field equations describing a self-gravitating massive neutrino, looking for axially-symmetric exact solutions; in the search of general solutions, we find some that are specific and which have critical features, such as the
Cianci, Roberto   +2 more
core   +2 more sources

Probabilistic Linear Solvers: A Unifying View

open access: yes, 2018
Several recent works have developed a new, probabilistic interpretation for numerical algorithms solving linear systems in which the solution is inferred in a Bayesian framework, either directly or by inferring the unknown action of the matrix inverse ...
Bartels, Simon   +3 more
core   +1 more source

Nonlinear Methods for Model Reduction

open access: yes, 2020
The usual approach to model reduction for parametric partial differential equations (PDEs) is to construct a linear space $V_n$ which approximates well the solution manifold $\mathcal{M}$ consisting of all solutions $u(y)$ with $y$ the vector of ...
Bonito, Andrea   +5 more
core   +2 more sources

A Linear Network Code Construction for General Integer Connections Based on the Constraint Satisfaction Problem [PDF]

open access: yes, 2015
The problem of finding network codes for general connections is inherently difficult in capacity constrained networks. Resource minimization for general connections with network coding is further complicated.
Cui, Ying   +6 more
core   +2 more sources

The Finite Mode Predictor-Corrector Methods in the Framework of General Linear Methods

open access: yesپژوهش‌های ریاضی, 2020
Introduction General linear methods(GLM) was developed by Butcher in 1966 as an extension of the traditional Runge-Kutta and linear multistep methods [1]. The classification of GLMs is an important open and active research area. Many authors studied GLMs
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doaj  

Commissioning strategies and methods

open access: yes, 2013
Accelerator beam commissioning is a challenging and exciting period. It is generally the first integrated operation of the many systems in an accelerator and, most importantly, of the beam. First, general preparation is discussed.
Galambos, John
core   +1 more source

Some General Linear Methods for the Numerical Solution of Non-Stiff IVPs in ODEs

open access: yesJournal of Algorithms & Computational Technology, 2013
In this paper, we consider the construction of explicit General Linear Methods (GLM) for the numerical solution of non-stiff initial value problems (IVPs) in ordinary differential equations (ODEs).
R. I. Okuonghae   +2 more
doaj   +1 more source

A class of explicit second derivative general linear methods for non-stiff ODEs

open access: yesMathematical Modelling and Analysis
In this paper, we construct explicit second derivative general linear methods (SGLMs) with quadratic stability and a large region of absolute stability for the numerical solution of non-stiff ODEs.
Mohammad Sharifi   +3 more
doaj   +1 more source

Blended General Linear Methods based on Boundary Value Methods in the GBDF family [PDF]

open access: yes, 2009
Among the methods for solving ODE-IVPs, the class of General Linear Methods (GLMs) is able to encompass most of them, ranging from Linear Multistep Formulae (LMF) to RK formulae.
Brugnano, Luigi, Magherini, Cecilia
core   +4 more sources

Adaptive vertex-centered finite volume methods for general second-order linear elliptic PDEs

open access: yes, 2017
We prove optimal convergence rates for the discretization of a general second-order linear elliptic PDE with an adaptive vertex-centered finite volume scheme. While our prior work Erath and Praetorius [SIAM J. Numer. Anal., 54 (2016), pp. 2228--2255] was
Erath, Christoph, Praetorius, Dirk
core   +1 more source

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