Preprint
Oct 2026
A Two-level Filtered Subspace Iterative Method for Generalized Hermitian Interior Eigenvalue Problems
We propose a two-level filtered subspace iterative (TLFSI) method for computing all eigenpairs whose eigenvalues in the interval of interest $[a,b]$ after finite element discretization of self-adjoint PDE eigenvalue problems. The method combines a two-level approach with a modern filtered subspace iteration framework....
Qi Li, Shi Shu, Xiao-Fei Xu et al.
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