Some remarks on the intervals of stability of Runge-Kutta methods after Richardson extrapolation
Some remarks on the restarted and augmented GMRES method.
Some remarks to numerical solution of the Euler and Navier-Stokes equation
Some results about the pseudospectral approximation of one-dimensional fourth-order problems.
Some results in multivariate interpolation.
Some results on convergence acceleration for the E-algorithm
Some new results on convergence acceleration for the E-algorithm which is a general extrapolation method are obtained. A technique for avoiding numerical instability is proposed. Some applications are given. Theoretical results are illustrated by numerical experiments
Some results on eigenvalues of nonnegative matrices
Some results on matrices of class and their application to the convergence rate of iteration procedures
Some results on nonlinear and nonlogarithmic sequences and their acceleration
Some results on semilinear systems on the unbounded space R3.
We study in this paper some systems, using standard tools devoted to the analysis of semilinear elliptic problems on R3. These systems do not admit any non trivial radial solutions in the E1 E2 = + 1 cases. A first type of solution consists in a ground state of R (-1,-1), exhibited by variational arguments, whose structure is a finite energy perturbation of a non trivial constant solution of R (-1,-1). A second type consists in a radial, oscillating, asymptotically null at infinity solution in the...
Some stochastic properties of the best determined terms method
Some superconvergence results of high-degree finite element method for a second order elliptic equation with variable coefficients
In this paper, some superconvergence results of high-degree finite element method are obtained for solving a second order elliptic equation with variable coefficients on the inner locally symmetric mesh with respect to a point x 0 for triangular meshes. By using of the weak estimates and local symmetric technique, we obtain improved discretization errors of O(h p+1 |ln h|2) and O(h p+2 |ln h|2) when p (≥ 3) is odd and p (≥ 4) is even, respectively. Meanwhile, the results show that the combination...
Some Supplementary Results on the l +... 2 Order Method for the Solution of Nonlinear Equations.
Some theorems on the stability of numerical processes
Nell’articolo si dimostrano alcuni teoremi sulla stabilità dei processi numerici di Ritz e della collocazione in rapporto agli errori di «distorsione».
Some theoretical results derived from polynomial numerical hulls of Jordan blocks.
Some tracks in air pollution modelling and simulation.
In this article we discuss some issues related to Air Pollution modelling (as viewed by the authors): subgrid parametrization, multiphase modelling, reduction of high dimensional models and data assimilation. Numerical applications are given with POLAIR, a 3D numerical platform devoted to modelling of atmospheric trace species.
Some uniformly convergent schemes on Shishkin mesh.
Some upwinding techniques for finite element approximations of convection-diffusion equations.
Some variants of the method of fundamental solutions: regularization using radial and nearly radial basis functions
The method of fundamental solutions and some versions applied to mixed boundary value problems are considered. Several strategies are outlined to avoid the problems due to the singularity of the fundamental solutions: the use of higher order fundamental solutions, and the use of nearly fundamental solutions and special fundamental solutions concentrated on lines instead of points. The errors of the approximations as well as the problem of ill-conditioned matrices are illustrated via numerical examples....
Source terms identification for time fractional diffusion equation.