Local Multilevel Method on Adaptively Refined Meshes for Elliptic Problems with Smooth Complex Coefficients. Issue 3 (5th August 2015)

• Record Type: Journal Article
• Authors: Li, Shishun; Shao, Xinping; Si, Zhiyong
• Is Part Of: Numerical mathematics. Volume 8:Issue 3(2015)
• Page Start: 336
• Page End: 355
• Publication Date: 2015-08-05
• Subjects: Numerical analysis -- Periodicals; Numerical analysis; Periodicals; 518.05
• DOI: 10.4208/nmtma.2015.m1323
• Languages: English
• ISSNs: 1004-8979

Abstract

<abstract abstract-type="normal"> <title>Abstract</title> <p>In this paper, a local multilevel algorithm is investigated for solving linear systems arising from adaptive finite element approximations of second order elliptic problems with smooth complex coefficients. It is shown that the abstract theory for local multilevel algorithm can also be applied to elliptic problems whose dominant coefficient is complex valued. Assuming that the coarsest mesh size is sufficiently small, we prove that this algorithm with Gauss-Seidel smoother is convergent and optimal on the adaptively refined meshes generated by the newest vertex bisection algorithm. Numerical experiments are reported to confirm the theoretical analysis.</p> </abstract>