Errata to ``The shift-inverted \(J\)-Lanczos algorithm for the numerical solutions of large sparse algebraic Riccati equations''
A correction in a proof in an earlier article [ibid. 33, No. 10, 23-40 (1997; Zbl 0889.65034)] is given. At a crucial point an assumption about the diagonal form of a symplectic matrix has to be replaced by block diagonal.
large sparse algebraic Riccati equations
scientific article; zbMATH DE number 1391621