In this paper, we present a method for the computation of the low-lying real eigenvalues of the Wilson-Dirac operator based on the Arnoldi algorithm. These eigenvalues contain information about several observables. We used them to calculate the sign of the fermion determinant in oneflavor QCD and the sign of the Pfaffian in N = 1 super Yang-Mills theory. The method is based on polynomial transf...
