2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42567The subjects which are discussed in this Thesis include: the self energy of a bound electron and the spin-dependence of QED corrections in bound systems, convergence acceleration techniques, and resummation methods for divergent series with an emphasis on physical applications.124 pages; based on a habilitation thesis (2003), University of Dresden; references to the work by Mastrolia, Bonciani and Remiddi updatedHigh Energy Physics - Phenomenologytext