Prove that \(S^{n-1}\) is not a retract of \(B^n\).
The boundary sphere is not a retract of the ball
P-TOP-WORKSHOP-QPH-06
- Area
- Topology
- Topics
- Homology, Retractions
- Status
- draft
P-TOP-WORKSHOP-QPH-06
Prove that \(S^{n-1}\) is not a retract of \(B^n\).