Abstract Electrical Impedance Tomography (EIT) is a recently developed imaging technique.
Small insensible currents are injected into the body using electrodes. Measured voltages …

This paper analyzes dropping strategies in a multilevel incomplete LU decomposition
context and presents a few strategies for obtaining related ILUs with enhanced robustness …

Preconditioned Krylov subspace (KSP) methods are widely used for solving large‐scale
sparse linear systems arising from numerical solutions of partial differential equations …

Iterative solution of large-scale scattering problems in computational electromagnetics with
the multilevel fast multipole algorithm (MLFMA) requires strong preconditioners, especially …

The numerical properties of a deterministic Boltzmann equation solver based on a spherical
harmonics expansion of the distribution function are analyzed and improved. A fully coupled …

We describe the algorithms used in the Matlab continuation and bifurcation package
pde2path for Hopf bifurcation and continuation of branches of periodic orbits in systems of …

We present a new supernode-based incomplete LU factorization method to construct a
preconditioner for solving sparse linear systems with iterative methods. The new algorithm is …

We study Chebyshev filter diagonalization as a tool for the computation of many interior
eigenvalues of very large sparse symmetric matrices. In this technique the subspace …

This paper presents a preconditioning method based on combining two-sided permutations
with a multilevel approach. The nonsymmetric permutation exploits a greedy strategy to put …

In Web link structures, similar link distributions often occur, especially for pages from same
hosts. For PageRank problems, similar in-link distributions of pages result in similar row …