A Nonhomogeneous Eigenfunction Expansion

Non-selfadjoint expressions of the form ly --y" + q(x)y have begun to be studied extensively in the past few years, and in two instances Naimark [4] (on the interval [0, oo)) and Kemp [3] (on the interval (-co, oo)) have achieved expansions in terms of eigenfunctions of /.By applying a suitable boun... View More