Riemannian Manifold - Sphere October 18, 2025 Let \(\mathbb{S}^n\) denote the \(n\)-sphere . Together with the round metric , \(\mathbb{S}^n\) is a Riemannian manifold . See also Link to heading curvature endomorphism on \(\mathbb{S}^n\) Ricci curvature on \(\mathbb{S}^n\)