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» Discrete Laplace-Beltrami operators and their convergence
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ADCM
2007
119views more  ADCM 2007»
13 years 7 months ago
Causality properties of refinable functions and sequences
We show that the scale-space operators defined by a class of refinable kernels satisfy a version of the causality property, and a sequence of such operators converges to the cor...
Say Song Goh, Tim N. T. Goodman, S. L. Lee
MOC
2010
13 years 2 months ago
H(div) preconditioning for a mixed finite element formulation of the diffusion problem with random data
We study H(div) preconditioning for the saddle-point systems that arise in a stochastic Galerkin mixed formulation of the steady-state diffusion problem with random data. The key i...
Howard C. Elman, Darran G. Furnival, Catherine E. ...
CDC
2010
IEEE
150views Control Systems» more  CDC 2010»
13 years 2 months ago
An adjoint method for second-order switching time optimization
Abstract-- Switched systems evolve over a sequence of continuous modes of operation, transitioning between modes in a discrete manner. Assuming a mode sequence is known, the evolut...
Timothy M. Caldwell, Todd D. Murphey
MOC
1998
96views more  MOC 1998»
13 years 7 months ago
Fast solvers of integral and pseudodifferential equations on closed curves
On the basis of a fully discrete trigonometric Galerkin method and two grid iterations we propose solvers for integral and pseudodifferential equations on closed curves which solv...
Jukka Saranen, Gennadi Vainikko
SIAMSC
2010
104views more  SIAMSC 2010»
13 years 2 months ago
BDDC Preconditioners for Spectral Element Discretizations of Almost Incompressible Elasticity in Three Dimensions
Abstract. BDDC algorithms are constructed and analyzed for the system of almost incompressible elasticity discretized with Gauss-Lobatto-Legendre spectral elements in three dimensi...
Luca F. Pavarino, Olof B. Widlund, Stefano Zampini