Wave propagation in abstract dynamical system with boundary control

M. I. Belishev

Let $L_0$ be a positive definite operator in a Hilbert space $\mathcal{H}$ with the defect indexes $n_{\pm }⩾1$ and let $\{\mathrm{Ker}{L}_0^{\ast };{\Gamma }_1,{\Gamma }_2\}$ be its canonical (by M.I…