Knowra3-manifoldLinked fromLinked fromThe 5 pages that link to 3-manifold, each with the reason it gives.All 5Related 2Narrower topic 3Poincaré conjectureNarrower topic: The conjecture concerns the global topology of spaces built from locally three-dimensional neighborhoods.Ricci flowRelated: Ricci flow with surgery classifies closed three-manifolds through their geometric decomposition.William ThurstonNarrower topic: Three-manifolds were the central setting for Thurston’s geometric classification program.Geometrization conjectureNarrower topic: The conjecture classifies compact examples by splitting them into geometrically structured pieces.Joan BirmanRelated: Three-manifolds provide the ambient spaces for many knot-theoretic questions.