© 1988 by Institute of Mathematics and its Applications
Some Results on Infinite-Dimensional Realization Theory
Department of Computer and System Sciences, Nankai University Tianjin, China
This paper deals with the linear continuous-time systems that can be realized on Hilbert spaces. The spectral minimality of controllable and exactly observable systems is considered. The existence and uniqueness problems of normal symmetric realizations are discussed. The existence problem of realization where the state transition operator generates a strongly continuous group is also discussed.