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document
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Köstler, H. (author), Popa, C. (author), Prümmer, M. (author), Rüde, U. (author)
In this paper we introduce a multigrid method for sparse, possibly rank-deficient and inconsistent least squares problems arising in the context of tomographic image reconstruction. The key idea is to construct a suitable AMG method using the Kaczmarz algorithm as smoother. We first present some theoretical results about the correction step and...
conference paper 2006
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