%0 Journal Article
%T DX-operator expansion
%A Alessandro Di Bucchianico
%A Daniel E. Loeb
%J Mathematics
%D 1995
%I arXiv
%X We characterize those linear operators that can be expressed as a sum over k of terms of the form f_k(D) x^k and give several examples.
%U http://arxiv.org/abs/math/9502211v1