Title
An Arbitrary-Order Discontinuous Galerkin Method with One Unknown Per Element
Abstract
We propose an arbitrary-order discontinuous Galerkin method for second-order elliptic problem on general polygonal mesh with only one degree of freedom per element. This is achieved by locally solving a discrete least-squares over a neighboring element patch. Under a geometrical condition on the element patch, we prove an optimal a priori error estimates in the energy norm and in the \(\hbox {L}^2\) norm. The accuracy and the efficiency of the method up to order six on several polygonal meshes are illustrated by a set of benchmark problems.
Year
DOI
Venue
2019
10.1007/s10915-019-00937-y
Journal of Scientific Computing
Keywords
Field
DocType
Least-squares reconstruction, Discontinuous Galerkin method, Elliptic problem, Primary 65N30, 49N45, Secondary 74K20
Discontinuous Galerkin method,Degrees of freedom (statistics),Polygon,Polygon mesh,Mathematical analysis,A priori and a posteriori,Mathematics
Journal
Volume
Issue
ISSN
80
1
1573-7691
Citations 
PageRank 
References 
1
0.37
13
Authors
4
Name
Order
Citations
PageRank
Li R124137.70
Pingbing Ming27212.02
Ziyuan Sun310.37
Zhijian Yang4194.49