The group of self-homotopy equivalences of $A_n^2$-polyhedra

Cristina Costoya, David Méndez, Antonio Viruel

Let $X$ be a finite type $A_n^2$-polyhedron, $n\ge 2$. In this paper we study the quotient group $\mathcal{E}(X)/{\mathcal{E}}_{\ast }(X)$, where $\mathcal{E}(X)$ is the group of self-ho…