In this paper, we discuss the problem of simultaneous stabilization for plants more than three by using Youla parametrization[1] and give a necessary and suffic
In this paper we carry out a study of modules over a 3 × 3 formal triangular matrix ring г=(T 0 0 M U 0 N○ u M N V ), where T, U, V are rings, M, N are U-T,