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FOCM
2010
161views more  FOCM 2010»
13 years 3 months ago
The Asymptotics of Wilkinson's Shift: Loss of Cubic Convergence
One of the most widely used methods for eigenvalue computation is the QR iteration with Wilkinson’s shift: here the shift s is the eigenvalue of the bottom 2 × 2 principal mino...
Ricardo S. Leite, Nicolau C. Saldanha, Carlos Tome...
FOCM
2010
108views more  FOCM 2010»
13 years 3 months ago
Iterative Thresholding Meets Free-Discontinuity Problems
Free-discontinuity problems describe situations where the solution of interest is defined by a function and a lower dimensional set consisting of the discontinuities of the funct...
Massimo Fornasier, Rachel Ward
FOCM
2010
122views more  FOCM 2010»
13 years 2 months ago
Scattering in Flatland: Efficient Representations via Wave Atoms
This paper presents a numerical compression strategy for the boundary integral equation of acoustic scattering in two dimensions. These equations have oscillatory kernels that we ...
Laurent Demanet, Lexing Ying