2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/78058We present a proof of the existence and uniqueness theorem of a normalizing biholomorphic mapping to Chern-Moser normal form. The explicit form of the equation of a chain on a real hyperquadric is obtained. We show a family of normal forms of nondegenerate real hypersurfaces including Chern-Moser normal form.Complex VariablesClassical Analysis and ODEs32H99Normal forms of real hyepersurfaces with nondegenerate Levi formtext