2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/152101Some curvature estimates are derived from geometrical data concerning quasi-conformality properties of some commuting linearly independent vector fields on a compact Riemannian manifold.8 pages, AMSTeX, no figuresDifferential GeometrySome curvature estimates for Riemannian manifolds equipped with foliations of rank 2text