In mathematics, a spherical 3-manifold M is a 3-manifold of the form M = S 3 / Γ {\displaystyle M=S^{3}/\Gamma } where Γ {\displaystyle \Gamma } is a finite subgroup of O(4) acting freely by rotations on the 3-sphere S 3 {\displaystyle S^{3}} . All such manifolds are prime, orientable, and closed.
In mathematics, a spherical 3-manifold M is a 3-manifold of the form M = S 3 / Γ {\displaystyle M=S^{3}/\Gamma } where Γ {\displaystyle \Gamma } is a finite subgroup of O(4) acting freely by rotations on the 3-sphere S 3 {\displaystyle S^{3}} . All such manifolds are prime, orientable, and closed.
Source: Wikipedia "Spherical 3-manifold" · CC BY-SA 4.0
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