This paper deals with the preconditioning of the curl-curl operator. We use H(curl)-conforming finite elements for the d......

In this paper, we present the construction of purely algebraic Daubechies wavelet based preconditioners for Krylov subsp......

考虑预条件极小残量法解对称不定线性系统的实施和收敛性.证明了对正定和不定的预条件 ,极小残量法给出的Euclidean残量范数相等.......

Explicit Exact and Approximate Inverse Preconditioners for solving complex linear systems are introduced. A class of gen......