Operator preconditioning: the simplest case

被引：0
|
作者：
Stevenson, Rob [1 ]
van Venetie, Raymond [1 ]
机构：
[1] Univ Amsterdam, Korteweg de Vries Inst Math, POB 94248, NL-1090 GE Amsterdam, Netherlands
来源：
APPLIED NUMERICAL MATHEMATICS | 2022年 / 172卷
关键词：
Operator preconditioning; Uniform preconditioners; Finite-and boundary elements; ELEMENT; PROJECTION; STABILITY;
D O I：
10.1016/j.apnum.2021.09.016
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
Using the framework of operator or Calderon preconditioning, uniform preconditioners are constructed for elliptic operators discretized with continuous finite (or boundary) elements. The preconditioners are constructed as the composition of an opposite order operator, discretized on the same ansatz space, and two identical diagonal scaling operators, whose matrix representation is the lumped mass matrix. (C) 2021 The Authors. Published by Elsevier B.V. on behalf of IMACS.
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页码：292 / 299
页数：8
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