2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/74651We give a full description of totally geodesic submanifolds in the tangent bundle of a Riemannian 2-manifold of constant curvature and present a new class of a cylinder-type totally geodesic submanifolds in the general case.Matematicheskaya fizika, analiz, geometriya - to appearDifferential Geometry53B25, 53C42Totally geodesic submanifolds in the tangent bundle of a Riemannian 2-manifoldtext