Schmid, J.J.Schmid2022-03-142022-03-142020https://publica.fraunhofer.de/handle/publica/40892010.1007/978-3-030-35898-3_32-s2.0-85087573275We investigate the behavior of infinite-time admissibility under compact perturbations. We show, by means of two completely different examples, that infinite-time admissibility is not preserved under compact perturbations Q of the underlying semigroup generator A, even if A and A + Q both generate strongly stable semigroups.en003006519conference paper