#### Volume 21, issue 4 (2017)

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Infinite order corks

### Robert E Gompf

Geometry & Topology 21 (2017) 2475–2484
##### Abstract

We construct a compact, contractible 4–manifold $C$, an infinite order self-diffeomorphism $f$ of its boundary, and a smooth embedding of $C$ into a closed, simply connected 4–manifold $X$, such that the manifolds obtained by cutting $C$ out of $X$ and regluing it by powers of $f$ are all pairwise nondiffeomorphic. The manifold $C$ can be chosen from among infinitely many homeomorphism types, all obtained by attaching a 2–handle to the meridian of a thickened knot complement.

##### Keywords
cork, h-v-cobordism, 4–manifold
##### Mathematical Subject Classification 2010
Primary: 57N13, 57R55