ABSTRACT
One of the main shortcomings of Chapter 1 is that the results are not applicable in modeling many important applications. In particular, in situations involving distributed parameter systems governed by partial differential equations it very often happens that the control inputs and the disturbances influence the system through the boundary, through point actuators inside the domain or through lower-dimensional surfaces inside the domain. Similarly it often happens that the measured output is taken as point evaluations or more general sensors with readings taken on lower-dimensional surfaces inside the domain or on the boundary of the domain.
