Flat manifold
= Flat manifold
{wiki}
= Flat Riemannian manifold
{synonym}
A Riemannian manifold is flat when every sectional curvature is zero. A complete simply connected flat $n$-manifold is isometric to Euclidean space $\mathbb R^n$.
= Flat manifold
{wiki}
= Flat Riemannian manifold
{synonym}
A Riemannian manifold is flat when every sectional curvature is zero. A complete simply connected flat $n$-manifold is isometric to Euclidean space $\mathbb R^n$.