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CORKS, PLUGS AND EXOTIC STRUCTURES

By Selman Akbulut and Kouichi Yasui

Abstract

Abstract. 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

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