JOURNAL OF GGT

Published in Journal of Gökova Geometry Topology, Volume 14 (2020)
Title Homotopy 4-spheres associated to an infinite order loose cork
Author Selman Akbulut
Abstract
We prove that the homotopy spheres \(\Sigma_{n} = -W\smile_{f^{n}}W\), formed by doubling the infinite order loose-cork \((W,f)\), by the iterates of the cork automorphism \(f: \partial W \to \partial W\), is \(S^4\). To do this we first show that \(\Sigma_{n} \) are obtained by Gluck twistings of \(S^4\). Then, from this we show how to cancel \(3\)-handles of \(\Sigma_{n}\) and identify it by \(S^{4}\).
Pages104-121
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Submitted: Nov 10, 2020
Accepted: Dec 19, 2020
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Last updated: December 2020
Web address: GokovaGT.org/journal/2020