Smash product (Ex)

Show that there is a homeomorphism $S^{n+1} \cong S^n \wedge S^1$$<wikitex>; Show that there is a homeomorphism $S^{n+1} \cong S^n \wedge S^1$. </wikitex> == References== {{#RefList:}} [[Category:Exercises]] [[Category:Exercises without solution]]S^{n+1} \cong S^n \wedge S^1$.