Umbral Calculus and Cancellative Semigroup Algebras
arXiv:funct-an/9704001
Abstract
We describe some connections between three different fields: combinatorics (umbral calculus), functional analysis (linear functionals and operators) and harmonic analysis (convolutions on group-like structures). Systematic usage of cancellative semigroup, their convolution algebras, and tokens between them provides a common language for description of objects from these three fields. Keywords: cancellative semigroups, umbral calculus, harmonic analysis, token, convolution algebra, integral transform
LaTeX, 32 pages, paper is completely revised from the title to bibliography