2 papers
math.NA2025
A GenEO-type coarse space with smaller eigenproblems
Peter Bastian, Nils Friess
Coarse spaces are essential to ensure robustness w.r.t. the number of subdomains in two-level overlapping Schwarz methods. Robustness with respect to the coefficients of the underl…
math.NA2023
A complex-projected Rayleigh quotient iteration for targeting interior eigenvalues
Nils Friess, Alexander D. Gilbert, Robert Scheichl
We introduce a new Projected Rayleigh Quotient Iteration aimed at improving the convergence behaviour of classic Rayleigh Quotient iteration (RQI) by incorporating approximate info…