Title
Optimal convergence for adaptive IGA boundary element methods for weakly-singular integral equations
Abstract
In a recent work (Feischl et al. in Eng Anal Bound Elem 62:141---153, 2016), we analyzed a weighted-residual error estimator for isogeometric boundary element methods in 2D and proposed an adaptive algorithm which steers the local mesh-refinement of the underlying partition as well as the multiplicity of the knots. In the present work, we give a mathematical proof that this algorithm leads to convergence even with optimal algebraic rates. Technical contributions include a novel mesh-size function which also monitors the knot multiplicity as well as inverse estimates for NURBS in fractional-order Sobolev norms.
Year
DOI
Venue
2017
10.1007/s00211-016-0836-8
Numerische Mathematik
Keywords
Field
DocType
65D07,65N38,65N50,65Y20
Convergence (routing),Mathematical optimization,Algebraic number,Singular integral,Mathematical analysis,Sobolev space,Boundary element method,Adaptive algorithm,Knot (unit),Mathematics,Estimator
Journal
Volume
Issue
ISSN
136
1
0945-3245
Citations 
PageRank 
References 
2
0.39
13
Authors
4
Name
Order
Citations
PageRank
M Feischl1527.67
gregor gantner231.77
alexander haberl320.39
Dirk Praetorius412122.50