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Two-Level preconditioned Krylov subspace methods for the solution of three-dimensional heterogeneous Helmholtz problems in seismics

✍ Scribed by Calandra, H.; Gratton, S.; Lago, R.; Pinel, X.; Vasseur, X.


Book ID
114994611
Publisher
Pleiades Publishing
Year
2012
Tongue
English
Weight
562 KB
Volume
5
Category
Article
ISSN
1995-4239

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A Preconditioned Krylov Subspace Method
✍ Kees Vuik; Agur G.J. Sevink; GΓ©rard C. Herman πŸ“‚ Article πŸ“… 1996 πŸ› Elsevier Science 🌐 English βš– 384 KB

In this paper we consider an underdetermined system of equations Lx Ο­ b so m Ο½ n. However, the methods given We present an iterative method of preconditioned Krylov type for the solution of large least squares problems. We prove that the in Section 3 can also be used for overdetermined systems. me