Linear overdetermined boundary value problems in Hilbert space
Perm State University, Bukirev Street 15, Perm 614990, Russia
Boundary Value Problems 2014, 2014:140 doi:10.1186/s13661-014-0140-4Published: 11 July 2014
The general linear boundary value problem for an abstract functional differential equation is considered in the case that the number of boundary conditions is greater than the dimension of the null-space to the corresponding homogeneous equation. Sufficient conditions of the solvability of the problem are obtained. A case of a functional differential system with aftereffect is considered separately.