Davydov, Oleg and Stevenson, Rob (2005) Hierarchical Riesz Bases for Hs(Omega), 1 < s < 5/2. Constructive Approximation, 22 (3). pp. 365394. ISSN 01764276

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Abstract
On arbitrary polygonal domains $Omega subset RR^2$, we construct $C^1$ hierarchical Riesz bases for Sobolev spaces $H^s(Omega)$. In contrast to an earlier construction by Dahmen, Oswald, and Shi (1994), our bases will be of Lagrange instead of Hermite type, by which we extend the range of stability from $s in (2,frac{5}{2})$ to $s in (1,frac{5}{2})$. Since the latter range includes $s=2$, with respect to the present basis, the stiffness matrices of fourthorder elliptic problems are uniformly wellconditioned.
Item type:  Article 

ID code:  4543 
Keywords:  hierarchical bases, splines, c1 finite elements, probability, mathematics, Probabilities. Mathematical statistics, Mathematics, Computational Mathematics, Analysis, Mathematics(all) 
Subjects:  Science > Mathematics > Probabilities. Mathematical statistics Science > Mathematics 
Department:  Faculty of Science > Mathematics and Statistics 
Depositing user:  Strathprints Administrator 
Date Deposited:  01 Nov 2007 
Last modified:  20 Oct 2015 18:17 
URI:  http://strathprints.strath.ac.uk/id/eprint/4543 
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