Linked from
The 17 pages that link to Manifold, each with the reason it gives.
GeodesicNarrower topic: Geodesics generalize straight lines from Euclidean space to manifolds.
Vector fieldNarrower topic: Vector fields extend from ordinary regions to curved spaces.
Möbius stripNarrower topic: The strip is a two-dimensional manifold with boundary.
Poincaré lemmaNarrower topic: Local exactness is asserted on smooth manifolds.
3-sphereRelated: The 3-sphere is locally three-dimensional despite its four-dimensional embedding.
Sard's theoremNarrower topic: The theorem extends a Euclidean result to maps on curved spaces.
Mathematics of general relativityRelated: Spacetime is modeled as a four-dimensional manifold.