Published in Journal of Gökova Geometry Topology, Volume 2 (2008)
Title Corks, Plugs and exotic structures
Author Selman Akbulut and Kouichi Yasui
We discuss corks, and introduce new objects which we call plugs. Though plugs are fundamentally different objects, they also detect exotic smooth structures in 4-manifolds like corks. We discuss relation between corks, plugs and rational blow-downs. We show how to detect corks and plugs inside of some exotic manifolds. Furthermore, we construct knotted corks and plugs.
Keywords 4-manifold, handlebody, Stein manifold, rational blow-down, h-cobordism
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Submitted: June 26, 2008
Accepted: July 29, 2008
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Last updated: December 2008
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