
doi: 10.3934/math.2022169
<abstract><p>A characterization of an $ m $-sphere $ \mathbf{S}^{m}(a) $ is obtained using a non-trivial torse-forming vector field $ \zeta $ on an $ m $-dimensional Riemannian manifold.</p></abstract>
torse-forming vector fields, ricci operator, QA1-939, Mathematics, ricci curvature
torse-forming vector fields, ricci operator, QA1-939, Mathematics, ricci curvature
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