In this paper hermitian and
anti-hermitian properties of the components of Green’s matrices of related boundary
value problems are studied. Necessary and sufficient conditions, depending only on
the matrices defining the boundary conditions, for the components of the Green’s
matrix of one problem to be hermitian or anti-hermitian with respect to certain
components of the kernel matrix of a related problem, are found. It is also
shown—for a wide class of problems—that some components of these Green’s
matrices cannot be hermitian (anti-hermitian).