Ünal, BernisGarcía-Río, EKupeli, DNÜnal, BDepartment of Modern Languages2024-07-052024-07-052003410022-039610.1016/S0022-0396(03)00173-62-s2.0-17744420675https://doi.org/10.1016/S0022-0396(03)00173-6https://hdl.handle.net/20.500.14411/1068Garcia-Rio, Eduardo/0000-0003-1195-1664A characterization of Euclidean spheres out of complete Riemannian manifolds is made by certain vector fields on complete Riemannian manifolds satisfying a partial differential equation on vector fields. (C) 2003 Elsevier Inc. All rights reserved.eninfo:eu-repo/semantics/openAccesssecond covariant differentialLaplacianconformal vector fieldaffine conformal vector fieldk-nullity vector fieldprojective vector fieldEuclidean sphereArticleQ11942287299WOS:000185729600002