A Note on the Stabilization of Linear Systems in Hilbert Spaces

On the Stability and Controllability of Degenerate Differential Systems in Hilbert Spaces

“…We denote by λA + B the operator pencil obtained by substituting the exponential function e λt v for all v ∈ H into 1.3 when Φ ≡ 0. Some real and practical applications of 1.3 can be found in [2], [7] and the references therein.…”