# Pages that link to "Union of two simply connected open subsets with path-connected intersection is simply connected"

The following pages link to **Union of two simply connected open subsets with path-connected intersection is simply connected**:

- Seifert-van Kampen theorem (← links)
- N-sphere is simply connected for n greater than 1 (← links)
- Suspension of path-connected space is simply connected (← links)
- 2-sphere (← links)
- Contractibility is not closure-preserved (← links)