The Dehn twist on a sum of two K3 surfaces

Ruberman gave the first examples of self-diffeomorphisms of fourmanifolds that are isotopic to the identity in the topological category but not smoothly so. We give another example of this phenomenon, using the Dehn twist along a 3-sphere in the connected sum of two K3 surfaces.

Bibliographic Details
Main Authors: Kronheimer, PB, Mrowka, TS
Other Authors: Massachusetts Institute of Technology. Department of Mathematics
Format: Article
Language:English
Published: International Press of Boston 2021
Online Access:https://hdl.handle.net/1721.1/133377
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author Kronheimer, PB
Mrowka, TS
author2 Massachusetts Institute of Technology. Department of Mathematics
author_facet Massachusetts Institute of Technology. Department of Mathematics
Kronheimer, PB
Mrowka, TS
author_sort Kronheimer, PB
collection MIT
description Ruberman gave the first examples of self-diffeomorphisms of fourmanifolds that are isotopic to the identity in the topological category but not smoothly so. We give another example of this phenomenon, using the Dehn twist along a 3-sphere in the connected sum of two K3 surfaces.
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spelling mit-1721.1/1333772023-01-09T21:29:14Z The Dehn twist on a sum of two K3 surfaces Kronheimer, PB Mrowka, TS Massachusetts Institute of Technology. Department of Mathematics Ruberman gave the first examples of self-diffeomorphisms of fourmanifolds that are isotopic to the identity in the topological category but not smoothly so. We give another example of this phenomenon, using the Dehn twist along a 3-sphere in the connected sum of two K3 surfaces. 2021-10-27T19:52:26Z 2021-10-27T19:52:26Z 2020 2021-05-25T13:46:55Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/133377 en 10.4310/MRL.2020.V27.N6.A8 Mathematical Research Letters Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf International Press of Boston arXiv
spellingShingle Kronheimer, PB
Mrowka, TS
The Dehn twist on a sum of two K3 surfaces
title The Dehn twist on a sum of two K3 surfaces
title_full The Dehn twist on a sum of two K3 surfaces
title_fullStr The Dehn twist on a sum of two K3 surfaces
title_full_unstemmed The Dehn twist on a sum of two K3 surfaces
title_short The Dehn twist on a sum of two K3 surfaces
title_sort dehn twist on a sum of two k3 surfaces
url https://hdl.handle.net/1721.1/133377
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