The theory of harmonic based function is discussed here within the framework of umbral operational methods. We derive a number of results based on elementary notions relying on the properties of Gaussian integrals.
@article{arxiv.1707.05206,
title = {Umbral Methods and Harmonic Numbers},
author = {Giuseppe Dattoli and Bruna Germano and Silvia Licciardi and Maria Renata Martinelli},
journal= {arXiv preprint arXiv:1707.05206},
year = {2017}
}