Pointwise completeness and pointwise degeneracy of standard and positive linear systems with state-feedbacks

The pointwise completeness and pointwise degeneracy of standard and positive linear discrete-time and continuous- time systems with state-feedbacks are addressed. It is shown that: 1) the pointwise completeness and pointwise degeneracy of continuous-time standard systems are invariant under the state and output feedbacks, 2) for standard and positive discrete-time and positive continuous- time systems necessary and sufficient conditions are established for the existence of gain matrices of statefeedbacks such that the closed-loop systems are pointwise complete. Considerations are illustrated by numerical examples.