Given an m-th order ordinary linear differential operator which is a polynomial of degree n in the eigenvalue parameter λ, we investigate n-fold expansions in terms of eigen- and associated functions of the differential operator. There are no a-priori restrictions on the positive integers n and m.
|Number of pages||16|
|State||Published - 23 Aug 2002|
- Domains of fractional power
- Self-adjoint boundary conditions
- Strongly regular boundary conditions
- n-fold expansion