Time-dependent operator matrices and inhomogeneous Cauchy problems

Non - Autonomous Inhomogeneous Boundary Cauchy Problems and Retarded Equations

“…Moreover, the solution of (IBCP ) is explicitly given by a variation of constants formula similar to the one given in [3] in the autonomous case. We note that the operator matrices method was also used in [4,8,9] for the investigation of inhomogeneous Cauchy problems without boundary conditions.…”