2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/169131J. Nash proved that the geometry of any Riemannian manifold M imposes no restrictions to be embedded isometrically into a (fixed) ball B_{\mathbb{R}^{N}}(1) of the Euclidean space R^N. However, the geometry of M appears, to some extent, imposing restrictions on the mean curvature vector of the embedding.A note of two pagesDifferential Geometry53C40; 53C42; 58C40text