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Linear Equations

Iterative methods, preconditioners


pcg Preconditioned conjugate gradients method
minres Minimum residual method
symmlq Symmetric LQ method
gmres Generalized minimum residual method (with restarts)
bicg Biconjugate gradients method
bicgstab Biconjugate gradients stabilized method
bicgstabl Biconjugate gradients stabilized (l) method
cgs Conjugate gradients squared method
qmr Quasi-minimal residual method
tfqmr Transpose-free quasi-minimal residual method
lsqr LSQR method
ichol Incomplete Cholesky factorization
ilu Incomplete LU factorization
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