ABSTRACT
In the classical theory of dynamical systems, symmetry has always played a central role. However it is only in the last 15 years it has also emerged as an issue in systems and control theory. Using the setting established in the behavioral approach to systems [9], [10], [11], a systematic analysis of symmetries for linear systems has been undertaken by the authors in [1], [2], [3] where the reader is also referred for a list of earlier system theoretic references on the subject.
