GLT-based preconditioners are built for multilevel Toeplitz systems from finite-difference discretization of the quasi-boundary regularized inverse source problem, producing eigenvalue clustering around one and faster GMRES convergence.
Diaz-Fuentes, S
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Efficient Krylov solvers for inverse source problem in 2D space-time fractional diffusion equation
GLT-based preconditioners are built for multilevel Toeplitz systems from finite-difference discretization of the quasi-boundary regularized inverse source problem, producing eigenvalue clustering around one and faster GMRES convergence.