Statements (15)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:surface
gptkb:singular_surface gptkb:ruled_surface |
| gptkbp:canBeEmbeddedIn |
3-dimensional space
|
| gptkbp:dimensions |
2
|
| gptkbp:hasEquation |
z = x y^2
|
| gptkbp:hasParametricEquation |
(u, v, u v^2)
|
| gptkbp:hasSelfIntersection |
yes
|
| gptkbp:hasSingularityType |
pinch point
|
| gptkbp:namedAfter |
gptkb:Hassler_Whitney
|
| gptkbp:studiedIn |
differential topology
singularity theory |
| gptkbp:bfsParent |
gptkb:Hassler_Whitney
|
| gptkbp:bfsLayer |
6
|
| https://www.w3.org/2000/01/rdf-schema#label |
Whitney umbrella
|