Excursion theory is applied to get identities for continuous time ladder variables. The identities are used to classify coharmonic and coinvariant functions for one dimensional Levy processes.
@article{1176994726,
author = {Silverstein, Martin L.},
title = {Classification of Coharmonic and Coinvariant Functions for a Levy Process},
journal = {Ann. Probab.},
volume = {8},
number = {6},
year = {1980},
pages = { 539-575},
language = {en},
url = {http://dml.mathdoc.fr/item/1176994726}
}
Silverstein, Martin L. Classification of Coharmonic and Coinvariant Functions for a Levy Process. Ann. Probab., Tome 8 (1980) no. 6, pp. 539-575. http://gdmltest.u-ga.fr/item/1176994726/