2 papers
math.NA2026
A Two-level Filtered Subspace Iterative Method for Generalized Hermitian Interior Eigenvalue Problems
Qi Li, Shi Shu, Xiaofei Xu +1
We propose a two-level filtered subspace iterative (TLFSI) method for computing all eigenpairs whose eigenvalues in the interval of interest after finite element discretiza…
math.NA2026
Adaptive Polynomial Filtering for Hermitian Interior Eigenproblems: Convergence Analysis
Xiaofei Xu, Yuhui Ni, Shengguo Li +1
Interior eigenvalue problems for large-scale sparse Hermitian matrices are fundamental in computational science. We propose an adaptive polynomial filtering strategy based on Cheby…