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Parallel Conjugate Gradient Method with Circulant Block-Factorization Preconditioners for 3D Elliptic Problems.
Ivan Lirkov
Svetozar Margenov
Marcin Paprzycki
J. McLaughlin
Published in:
PPSC (1999)
Keyphrases
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iterative methods
conjugate gradient method
image sequences
objective function
linear systems
computationally expensive
matrix factorization
constrained optimization