Bessel sequences in Hilbert $C^{\ast }$-modules

Abdelilah Karara, Khadija Mabrouk

In this peaper we stady certain Bessel sequences ${\left\{f_k\right\}}_{k=1}^{\infty }$ in Hilbert C*- modules $\mathcal{H}$ for which operator $S$ defined by \ref{eq2} is of the form…