Hello, I'm looking for advice on how to set shift and antishift for the cayley spectral transformation. So far I've been using sinvert to find the eigenvalues with the smallest real part (but possibly large imaginary part). For this, I use the following options: -st_type sinvert -eps_target -0.05 -eps_target_real
With sinvert, it is easy to understand how to chose the target, but for Cayley I'm not sure how to set shift and antishift. What is the mathematical meaning of the antishift? Best regards, Michael Werner
