From symplectic deformation to isotopy

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Let $X$ be an oriented 4-manifold which does not have simple SW-type, for example a blow-up of a rational or ruled surface. We show that any two cohomologous and deformation equivalent symplectic forms on $X$ are isotopic. This implies that blow-ups of these manifolds are unique, thus extending work of Biran. We also establish uniqueness of structure for certain fibered 4-manifolds.
Latex 16 pages. Revised version of Aug 4, 1997. The last section on symplectic fibrations has been improved

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Differential Geometry, 53C15 (Primary) 57R57 (Secondary)

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http://salesiana.dossiersoluciones.com/handle/123456789/148770

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/dg-ga/9606004
 http://arxiv.org/abs/dg-ga/9606004

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arXiv