Group of Water Supply and Groundwater Protection, Institute IWAR, Department of Civil Engineering and Geodesy, Technical University of Darmstadt, Darmstadt, Germany. This paper presents a numerical ...

In this paper, a new extrapolation economy cascadic multigrid method is proposed to solve the image restoration model. The new method combines the new extrapolation formula and quadratic interpolation ...

Abstract: To model the responses of borehole electromagnetic sensing in complicated geological environments, the geometric multigrid preconditioned finite-difference frequency-domain (FDFD) method is ...

Abstract: A nesting combination of the finite element domain decomposition method and the algebraic multigrid method is presented in this paper, which does not use the algebraic multigrid method as a ...

In contrast to the standard algebraic multigrid, the Wavelet-based Algebraic Multigrid method relies more strongly on the smoothing method because the coarse spaces are chosen a priori. So, it is very ...

Cascadic multigrid methods represent a class of iterative solvers that have been developed to efficiently tackle the large-scale linear systems arising from the discretisation of partial differential ...

This paper proposes a new method for data assimilation of the surface radial current observed by High Frequency ground wave radar and optimization of the bottom friction coefficient. In this method, ...

TGMG is a software library for solving a class of elliptic partial differential equations on two-dimensional rectangular grids using the multigrid method. A defining characteristic of the library is ...

A projective multigrid method is considered for application to fermion propagators in the presence of gauge fields. The collective variables on each block are defined by the gauge-invariant projection ...

The repository contains examples and programs from the book “Sequential Software for the Robust Multigrid Technique” by S. I. Martynenko, Triumph, Moscow, 2020. Complete text of the book in Russian is ...

We present a new implementation of the Fourier acceleration method for Landau gauge fixing. By means of a multigrid inversion we are able to avoid the use of the fast Fourier transform. This makes the ...