فهرست نشریات علمی دسترسی آزاد ایران

In this paper, the stability of duals and approximate duals of discrete frames, continuous frames and generalized frames in Hilbert spaces and Hilbert C*-modules under the action of bounded operators is considered. It is shown that under some conditions, duals and approximate duals are stable under the action of bounded operators. Especially, the stability of duals and approximate duals under the morphisms of Hilbert C*-modules is studied.