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Exotic iterated Dehn twists

Author(s)
Seidel, Paul Alfred
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Abstract
Consider cotangent bundles of exotic spheres with their canonical symplectic structure. They admit automorphisms that preserve the part at infinity of one fiber and which are analogous to the square of a Dehn twist. Pursuing that analogy, we show that they have infinite order up to isotopy (inside the group of all automorphisms with the same behavior).
Date issued
2015-01
URI
http://hdl.handle.net/1721.1/106514
Department
Massachusetts Institute of Technology. Department of Mathematics
Journal
Algebraic & Geometric Topology
Publisher
Mathematical Sciences Publishers
Citation
Seidel, Paul. “Exotic Iterated Dehn Twists.” Algebraic & Geometric Topology 14.6 (2015): 3305–3324.
Version: Author's final manuscript
ISSN
1472-2739
1472-2747

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