Title
Discontinuous Galerkin Methods for Quasi-Linear Elliptic Problems of Nonmonotone Type
Abstract
In this paper, both symmetric and nonsymmetric interior penalty discontinuous $hp$-Galerkin methods are applied to a class of quasi-linear elliptic problems which are of nonmonotone type. Using Brouwer’s fixed point theorem, it is shown that the discrete problem has a solution, and then, using Lipschitz continuity of the discrete solution map, uniqueness is also proved. A priori error estimates in the broken $H^1$-norm, which are optimal in $h$ and suboptimal in $p$, are derived. Moreover, on a regular mesh an $hp$-error estimate for the $L^2$-norm is also established. Finally, numerical experiments illustrating the theoretical results are provided.
Year
DOI
Venue
2007
10.1137/050643362
SIAM J. Numerical Analysis
Keywords
Field
DocType
galerkin method,nonsymmetric interior penalty discontinuous,nonmonotone type,numerical experiment,quasi-linear elliptic problems,error estimate,discontinuous galerkin methods,discrete problem,point theorem,lipschitz continuity,discrete solution map,quasi-linear elliptic problem,discontinuous galerkin method
Discontinuous Galerkin method,Uniqueness,Mathematical optimization,Mathematical analysis,Galerkin method,Finite element method,Lipschitz continuity,Mathematics,Fixed-point theorem,Elliptic curve,Penalty method
Journal
Volume
Issue
ISSN
45
1
0036-1429
Citations 
PageRank 
References 
15
0.91
2
Authors
2
Name
Order
Citations
PageRank
Thirupathi Gudi113514.43
Amiya Kumar Pani27113.73