3 citations · 3 across the 1 of their papers we have counts for
2 papers
math.NA2022
An analysis of the Rayleigh-Ritz and refined Rayleigh-Ritz methods for regular nonlinear eigenvalue problems
Zhongxiao Jia, Qingqing Zheng
We establish a general convergence theory of the Rayleigh--Ritz method and the refined Rayleigh--Ritz method for computing some simple eigenpair of a given analytic…
math.NA2020★ 3 cited
A power Schur complement Low-Rank correction preconditioner for general sparse linear systems
Qingqing Zheng, Yuanzhe Xi, Yousef Saad
An effective power based parallel preconditioner is proposed for general large sparse linear systems. The preconditioner combines a power series expansion method with some low-rank…