simply connected surface
C28452
concept
A simply connected surface is a two-dimensional topological space in which every closed loop can be continuously contracted to a point without leaving the surface.
All labels observed (2)
| Label | Occurrences |
|---|---|
| simply connected surface canonical | 2 |
| 2-dimensional manifold | 1 |
Instances (2)
| Instance | Via concept surface |
|---|---|
| Riemann sphere | — |
| Poincaré upper half-plane model | 2-dimensional manifold |