Subject: Question on Homotopy group! From: "???" Date: Tue, 25 Oct 2005 09:44:48 +0800 Let $A=S^n \vee\codts S^n$, and $f$ is in the homotopy group $\pi_{2n-1}(A)$, how to compute the $2n$-th homotopy group of the mapping cone of $f$. Best regards Zhao Xu an