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MOC
2002
107views more  MOC 2002»
14 years 9 months ago
Convergence of the shifted QR algorithm for unitary Hessenberg matrices
This paper shows that for unitary Hessenberg matrices the QR algorithm, with (an exceptional initial-value modification of) the Wilkinson shift, gives global convergence; moreover,...
Tai-Lin Wang, William B. Gragg
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MOC
2002
83views more  MOC 2002»
14 years 9 months ago
A posteriori error estimates for general numerical methods for Hamilton-Jacobi equations. Part I: The steady state case
A new upper bound is provided for the L-norm of the difference between the viscosity solution of a model steady state Hamilton-Jacobi equation, u, and any given approximation, v. T...
Samuel Albert, Bernardo Cockburn, Donald A. French...
MOC
2002
86views more  MOC 2002»
14 years 9 months ago
An algorithm for finding all preprojective components of the Auslander-Reiten quiver
Abstract. The Auslander-Reiten quiver of a finite-dimensional associative algebra A encodes information about the indecomposable finite-dimensional representations of A and their h...
Peter Dräxler, Klara Kögerler
MOC
2002
101views more  MOC 2002»
14 years 9 months ago
Proving the deterministic period breaking of linear congruential generators using two tile quasicrystals
We describe the design of a family of aperiodic PRNGs (APRNGs). We show how a one-dimensional two tile cut and project quasicrystal (2TQC) used in conjunction with LCGs in an APRNG...
Louis-Sebastien Guimond, Jiri Patera
MOC
2002
151views more  MOC 2002»
14 years 9 months ago
Mixed finite element methods for unilateral problems: convergence analysis and numerical studies
In this paper, we propose and study different mixed variational methods in order to approximate with finite elements the unilateral problems arising in contact mechanics. The discr...
Patrice Coorevits, Patrick Hild, Khalid Lhalouani,...