Found 26 Documents (Results 1–26)
Kronecker product approximation for the total variation regularization in image restoration. (English) Zbl 1524.94007
Preconditioners for fractional diffusion equations based on the spectral symbol. (English) Zbl 07584149
Reviewer: Adhemar Bultheel (Leuven)
Parallel-in-time preconditioner for the sinc-Nyström systems. (English) Zbl 1497.65156
Reviewer: Kanakadurga Sivakumar (Chennai)
Comparative study of inner-outer Krylov solvers for linear systems in structured and high-order unstructured CFD problems. (English) Zbl 1521.65028
Linear and nonlinear substructured restricted additive Schwarz iterations and preconditioning. (English) Zbl 1494.65100
Reviewer: Marius Ghergu (Dublin)
Heavy ball flexible GMRES method for nonsymmetric linear systems. (English) Zbl 1513.65089
MSC:
65F10
A simpler GMRES algorithm accelerated by Chebyshev polynomials for computing PageRank. (English) Zbl 1489.65058
MSC:
65F15
GMRES methods for tomographic reconstruction with an unmatched back projector. (English) Zbl 1489.65060
Applying GMRES to the Helmholtz equation with strong trapping: how does the number of iterations depend on the frequency? (English) Zbl 1492.65090
Discrete cosine transform LSQR methods for multidimensional ill-posed problems. (English) Zbl 1499.65137
A preconditioner based on sine transform for space fractional diffusion equations. (English) Zbl 1497.65065
A computational study of preconditioning techniques for the stochastic diffusion equation with lognormal coefficient. (English) Zbl 1485.65028
A stabilized GMRES method for singular and severely ill-conditioned systems of linear equations. (English) Zbl 1492.65095
A fully structured preconditioner for a class of complex symmetric indefinite linear systems. (English) Zbl 1498.65044
Preconditioning techniques for the coupled Stokes-Darcy problem: spectral and field-of-values analysis. (English) Zbl 1493.65190
On general convergence behaviours of finite-dimensional approximants for abstract linear inverse problems. (English) Zbl 1509.65110
A new block-diagonal preconditioner for a class of \(3\times 3\) block saddle point problems. (English) Zbl 1481.65048
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