Statements (13)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:mathematical_concept
|
| gptkbp:defines |
A smooth manifold homeomorphic but not diffeomorphic to the standard 4-sphere
|
| gptkbp:dimensions |
4
|
| gptkbp:field |
differential topology
|
| https://www.w3.org/2000/01/rdf-schema#label |
exotic 4-sphere
|
| gptkbp:relatedTo |
gptkb:4-sphere
gptkb:Riemannian_manifold gptkb:smooth_Poincaré_conjecture smooth structure exotic sphere |
| gptkbp:status |
unknown existence
|
| gptkbp:bfsParent |
gptkb:Smooth_four-dimensional_Poincaré_conjecture
|
| gptkbp:bfsLayer |
7
|