Jean C. Cortissoz2026-03-222026-03-22200810.1007/s10711-008-9300-yhttps://doi.org/10.1007/s10711-008-9300-yhttps://andeanlibrary.org/handle/123456789/49901Citaciones: 12enMathematicsCurvatureMathematical analysisBoundary (topology)Scalar curvatureMetric (unit)Differential geometrySectional curvatureRicci curvatureRegular polygonThree-manifolds of positive curvature and convex weakly umbilic boundaryarticle