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Vsevolod Shevchishin
- Speaker(s)
- On the symplectomorphisms of rational 4-manifolds.
- Affiliation
- Research University Higher School of Economics, Moskwa
- Date
- March 31, 2015, 2:30 p.m.
- Room
- room 4070
- Seminar
- Seminar Algebraic Topology
Abstract. We show that every homotopically trivial symplectomorphism of a rational or ruled 4-manifold is smoothly isotopic to the identity. This allows to understand the sructure of the diffeotopy group of rational and ruled 4-manifolds.
