Form Domains and Eigenfunction Expansions for Differential Equations with Eigenparameter Dependent Boundary Conditions
Paul Binding, Branko Ćurgus · Canadian Journal of Mathematics · 2002
Abstract Form domains are characterized for regular 2n-th order differential equations subject to general self-adjoint boundary conditions depending affinely on the eigenparameter. Corresponding modes of convergence for eigenfunction expansions are studied, including uniformconvergence of the first n − 1 derivatives.