S-Cobordism Classification of $4$-Manifolds Through the Group of Homotopy Self-Equivalences

Friedrich Hegenbarth, Mehmetcik Pamuk, Dušan Repovš

Published 2015-01-06Version 1

The aim of this paper is to give an $s$-cobordism classification of topological $4$-manifolds in terms of the standard invariants using the group of homotopy self-equivalences. Hambleton and Kreck constructed a braid to study the group of homotopy self-equivalences of $4$-manifolds. Using this braid together with the modified surgery theory of Kreck, we give an $s$-cobordism classification for certain $4$-manifolds with fundamental group $\pi$, such that cd $\pi \leq 2$.