On the Stability of Linear Canonical Systems with Periodic Coefficients

Abstract

Journal of the Australian Mathematical Society 5 (1965), 169–195Theorem 9 (p. 183) should read: The indices of any closed curve inD have the formn+ = hp/s, n− = hq/sfor some integer h, where s (1 ≦ s ≦ n) is the largest number of identical blocks into which the signature σ can be partitioned. Moreover, for any integer h there exists a closed curve in d with these indices.