2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/73594We adapt the results of Part 1 to include the unit ball in the Heisenberg group, the model domain with characteristic boundary points. In particular, we construct function spaces on which the Kohn Laplacian with the \bar{\partial}_b-Neumann boundary conditions is an isomorphism. As an application, we establish sharp regularity for a canonical solution to the inhomogenous \bar{\partial}_b equation on the unit ball.23 pagesComplex VariablesDifferential Geometry32W10 (primary); 32V20; 35H20 (secondary)text