\xymatrix@=00pt{ {\triangle}({\ensuremath{\mathbb{T}}},n+0) \ar[d]_{{\lgroup}{\lgroup}\varsigma\circ{\partial}_{i}{\rgroup}_{i},{\partial}_{0}^{n+0}{\rgroup}} \ar@<0.00ex>[r]^-{{\partial}_{n+0}} \ar@<0.00ex>[r] \ar@<-0.00ex>[r]^-{\vdots} & {\triangle}({\ensuremath{\mathbb{T}}},n) \ar[d]^{{\lgroup}\varsigma,{\partial}_{0}^{n+0}{\rgroup}}\\ A^{n+0} \times Z \ar@<0.00ex>[r]^-{{\partial}_{n+0}\times 0_{Z}} \ar@<0.00ex>[r]|-{\operatorname{pr}_{n}\times 0_{Z}} \ar@<-0.00ex>[r]_-{\operatorname{pr}_{0}\times 0_{Z}}^-{\vdots} &  A \times Z