Resumen: We characterize the solutions of the Poisson equation and the domain of its associated one-sided Hilbert transform for (C, α)-bounded operators, α > 0. This extends known results for power bounded operators to the setting of Cesàro bounded operators of fractional order, thus generalizing the results substantially. In passing, we obtain a generalization of the mean ergodic theorem in our framework. Examples are given to illustrate the theory. Idioma: Inglés DOI: 10.1007/s11856-022-2353-z Año: 2023 Publicado en: Israel Journal of Mathematics 253 (2023), 917–987 ISSN: 0021-2172 Factor impacto JCR: 0.8 (2023) Categ. JCR: MATHEMATICS rank: 178 / 489 = 0.364 (2023) - Q2 - T2 Factor impacto CITESCORE: 1.7 - Mathematics (all) (Q2)