180KiB, 826x575, FoxitReader_6xQyJCAfim.png View SameGoogleiqdbSauceNAO Anonymous Wed 15 Sep 00:43:49 2021 No.13641773 ViewReplyOriginalReport Quoted By: I still don't buy it. Can anyone provide a rigorous proof that it's homotopy equivalent to S^2 wedge S^1? (this is Hatcher p46)
