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From flops to
diffeomorphism groups
Gleb Smirnov |
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Geometry & Topology 26 (2022) 875–898
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Abstract |
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We exhibit many examples of closed complex surfaces whose diffeomorphism groups are not simply connected and which contain loops that are not homotopic to loops of symplectomorphisms. |
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Keywords
diffeomorphism groups, Seiberg–Witten invariants, flop
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Mathematical Subject Classification
Primary: 14J80, 32J15, 32Q65, 57K43, 58D05
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References |
Publication
Received: 7 June 2020
Revised: 23 August 2020
Accepted: 10 February 2021
Published: 15 June 2022
Proposed: Yasha Eliashberg
Seconded: Ciprian Manolescu, Leonid Polterovich
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Authors |
| Gleb Smirnov | |
| Department of Mathematics ETH Zürich Zürich Switzerland |
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