2 papers
math.NA2017
A unified approach to the design and analysis of AMG
Jinchao Xu, Hongxuan Zhang, Ludmil Zikatanov
In this work, we present a general framework for the design and analysis of two-level AMG methods. The approach is to find a basis for locally optimal or quasi-optimal coarse space…
math.NA2017
On the Weyl's law for discretized elliptic operators
Jinchao Xu, Hongxuan Zhang, Ludmil Zikatanov
In this paper we give an estimate on the asymptotic behavior of eigenvalues of discretized elliptic boundary values problems. We first prove a simple min-max principle for selfadjo…