Some non-trivial families of symplectic structures

@inproceedings{Kronheimer1997SomeNF,
  title={Some non-trivial families of symplectic structures},
  author={P. B. Kronheimer},
  year={1997}
}
  • P. B. Kronheimer
  • Published 1997
It has recently been shown by Seidel [10] that many symplectic 4-manifolds admit symplectic automorphisms which are differentiably isotopic to the identity but which cannot be deformed to the identity through symplectomorphisms. Seidel detected this phenomenon using the Floer homology groups that are associated to pairs of Lagrangian surfaces. The purpose of this note is to show that a related but weaker manifestation of the same phenomenon can be detected using invariants derived from the… CONTINUE READING
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